I'm not graduating highschool, is my future going to crash?

I'm not graduating highschool, I have so many classes to make up beyond repair and it's senior year. I've already accepted that fact but apparently no one else has. Going to school is literally a bother and a waste as of now. Everyone keeps telling me that graduating is so important and that I have to/Can (when I can't) make it and that if I don't graduate then I won't have a "Life". Honestly what does that even mean. Does not receiving a piece of paper mean that I have little to no means of ways to live a good life? Well if that's the case, Because it apparently is to society, I shouldn't even be alive right now. I'm not graduating, which means that I won't have a life, right? So that only makes sense. I'm joking of course I know that I'll still have a life. But is it really THAT bad that people make it out to be. Sure, I won't go to a fancy college, sure, I probably won't pursue certain things that I love to do, but does that really mean I'm basically screwed? I couldn't care less for school, I literally don't. School isn't what builds a person and their character. It's life that builds a person, and who they are. School is just a place where kids are forced to go for like 12 years. Like. Okay.