I'm done with this website. Any last words?

Most of us are not mind readers & don't know what is on other peoples minds or what they are thinking.  So you are not alone in that thought. 

Be yourself & bide by your own rules.  Stand out as yourself, you are a special human being with many qualities you haven't found yet. Hobbies can help, get involved in something, find a hobby you would like to learn & do it.  Staying busy helps 

You are in a state of depression & may need some medicine to help you cope with the life you are leading.  All of us need help now & again & there is nothing wrong with asking for some help.

If you were to stop using expletives you'd be a happier person.  Use decent vocabulary then you could give those ******* a miss and you'd be a much happier person. At the moment you sound very angry.  You'll end up with an ulcer at worse or a migraine at least.  

As far as leaving this site is concerned it is up to you but I don't see anything in your narrative that gives me the feeling it's this website giving you your problems. Maybe you could leave it alone for one full day and then try again with a fresh look on life.

This is a pretty good place.
You should think twice what to do.

When people are able to hide behind anonymity on the internet they can be more toxic. I feel like they act and say things that they do not genuinely feel and that they would never say or think in real life. Stop questioning your value. Stop trying to live by other peoples responses to how they think others should act. It sounds like you worry about what other people think and are concerned with how you come across, this tells me one thing in particular.. that you have a lot of empathy, this is a very valuable commodity in this selfish world. Rather than trying to strive to act and be like how you think other people want you to and understand what goes on in their head, strive to understand what is going on in your own head. Think about the things that matter to you. I understand what it is like to be suicidal but killing yourself resolves nothing. Fight against your negative feelings, take it a day at a time. And good luck.  

This website used to be a lot nicer when we were able to directly comment on other people's answers. If you don't understand what is going on in people's head, you can ask the people on this website and most will be happy to explain. 
People answer for fun, and to share their feelings. It's hard to do that when you have negative feelings because people enjoy others who are cheerful.
There's a poem: Laugh and the world laughs with you, weep and you weep alone.
. . . .succeed and give, and it helps you live, but no man can help you die. 

Solitude
BY ELLA WHEELER WILCOX
Laugh, and the world laughs with you;
Weep, and you weep alone;
For the sad old earth must borrow its mirth,
But has trouble enough of its own.
Sing, and the hills will answer;
Sigh, it is lost on the air;
The echoes bound to a joyful sound,
But shrink from voicing care.

Rejoice, and men will seek you;
Grieve, and they turn and go;
They want full measure of all your pleasure,
But they do not need your woe.
Be glad, and your friends are many;
Be sad, and you lose them all,—
There are none to decline your nectared wine,
But alone you must drink life’s gall.

Feast, and your halls are crowded;
Fast, and the world goes by.
Succeed and give, and it helps you live,
But no man can help you die.
There is room in the halls of pleasure
For a large and lordly train,
But one by one we must all file on
Through the narrow aisles of pain.