Throughout my experiences being in this category, my views regarding the LGBT are mostly opposing views. I'm simply not convinced that people are truly born LGBT. Instead, I believe that homosexuality is unnatural, most likely caused by childhood trauma, is associated with various diseases, and a choice like all forms of sexuality.
Beginning with my first point, homosexuality is unnatural. Albeit the word "natural" has many definitions, one of those meanings is "to conform to the ordinary course of nature." For example, our ability to be sexually aroused naturally exists to prepare us for reproduction, which is only possible with the opposite sex. Because lesbians, gays, and bisexuals are sexually aroused by people of the same sex, clearly their sexuality doesn't correspond to the ordinary course of nature. Additionally, some LGBT people and their supporters might claim that homosexuality is natural because homosexuality occurs in the animal kingdom or that sex doesn't truly have to be done for reproductive purposes. Either way, even if animals engage in true homosexuality, it only proves that even animals can engage in unnatural acts and even if sex doesn't have to be reproductive, it's still the biology purpose of sex regardless of what we use it for. Therefore, homosexuality is unnatural.
Furthermore, homosexuality mighty likely to be caused by childhood trauma. Although LGBT people and their supporters might not want to admit it, a strong correlation exists between people that suffered some sort of trauma during their childhood such as abuse and homosexuality. For instance, 48% of members of "People Can Change" online support groups, which have a combined membership of 600 men, said that they had been sexually abused as children and 96% considered the abuse to be a contributing factor to their developing same-sex attraction feelings. I believe that people that underwent sexual abuse as children from a person of the same sex is more likely to find a same-sex person as a partner when they age due to having the experience early, but in a loving way rather than being a victim again. Additionally, LGBT people and their supporters might claim that trauma doesn't cause homosexuality because they are gay, but never experienced abuse. My response is that while there might be some exceptions, the strong correlation between LGBT that suffered some sort of trauma can't be ignored. Therefore, childhood trauma is likely a causative factor in homosexuality.
Moreover, homosexuality is highly associated with diseases. Despite LGBT people supposedly being around 2% of the population or so, high rates of STD infections and diseases such as anal cancer exist in the gay community. For example, despite gays being only 2% of the population, they comprise over 70% of new HIV/AIDS cases every year, to which 57% of all people infected with HIV/AIDS were men who have sex with men; even using protection barely prevents HIV or STD spreading due to condoms being more likely to break in the anus. Gay men are also at high risk of anal cancer more so than any other groups and comprise the group mostly infected with primary and secondary syphilis. In addition, some might claim heterosexuals comprise the group mostly infected with STDs. However, because heterosexuals are about 98% of the population, apparently heterosexuals would be the group mostly afflicted, but because gay people are around only 2% of the population, they have the highest rates of infection. Therefore, disease is mostly associated with homosexuality.
Lastly, homosexuality is a choice like any form of sexuality. While people might not be to choose what sexually arouses them initially, they can choose whether or not they wish to remain gay. For example, even though sexual attraction might not exist, a person can still date and connect with another person based on other factors such as enjoying the person's personality, have sex, get used to it, enjoy it, and eventually develop a sexual attraction to the sex acts and the person that he or she connected to. Though it might seem impossible, the effort takes strong dedication and the true desire to change sexual orientation. In addition, some might claim that choosing sexual orientation is impossible because they felt gay since they were children. However, many cases exist of people choosing to be gay or gay people choosing to be straight, and claims that people with choices were "bisexual all along" are nothing more than arguments used to hold on to the belief that homosexuality is a birth trait. Therefore, being LGBT is a choice.
As for transgender people, I'm not convinced that they are the sex they claim to be. Being male or female isn't something that you choose or identify as because biological sex is determined by sex chromosomes and enforced by reproductive roles, not gender identity. For example, if a person has XY chromosomes with the reproductive role of producing sperm and fertilizing egg cells, this person is male. If the person has XX chromosomes with the reproductive role of producing egg cells and giving birth, this person is female. Because sex chromosomes and reproductive roles can't be altered, a person's birth sex can't be altered too. Hormone therapy and surgery only makes cosmetic changes to the human body, not genetic changes. Additionally, some people might claim that transgender people are born with different brain patterns that can cause gender identity disorder. However, no real evidence proves it true because studies aren't conducted to prove if transgenderism is possible without the brain patterns. Therefore, transgender people would always be the sex they were born.
In conclusion, based on my arguments and facts presented, it's should be clear that homosexuality is unnatural, most likely caused by childhood trauma, is associated with various diseases, and a choice like all forms of sexuality. It should also be clear that transgender people would never be the sex they claim to be as well. Nonetheless, I have nothing against LGBT people, but I would always have my reasons for opposing their lifestyle.
Sources:
Defining "natural:"
http://www.merriam-webster.com/dictionary/natural
Disease rates:
http://www.cdc.gov/msmhealth/std.htm
Accounts of people choosing homosexuality:
http://www.queerbychoice.com/
Possible causes of homosexuality and childhood trauma:
http://www.peoplecanchange.com/change/causes.php
Gay men and anal cancer:
http://www.cancer-network.org/cancer_information/gay_men_and_cancer/anal_cancer_hiv_and_gay_men.php
What determines biological sex:
http://www.soc.ucsb.edu/sexinfo/article/sex-determination-and-differentiation
Can sex chromosomes be altered:
http://genetics.thetech.org/ask/ask35