Sorry if I am blunt or something but I beg you separate the two things: yourself and humanity for a bit.

About humanity: the world is full of people, all of them are diverse. Some people are fat, some are slim, some are tall, some are short, some are children, some are older people. Some people have depression, some people don't. But everybody has to put up with each other. Because human beings are social entities and we need each other to survive. And because every human being has the right to live, no matter what. You exist. You have the right to be here and the other people have to deal with it, in the same way you have to deal with them. Even if everybody in this world hated you, you would have the right to exist.
A different thing is that if you do not want to exist because of whatever reason/s. If you make a decision in control of your own life.
But I do not think this is the case. I think you are mixing the two things and you perhaps are giving too much weight to other people wishes or prerogatives.
Sorry if my English is not OK.