Well, part of the reason to get involved with society despite it's flaws is that people really have no choice. Everyone has needs - food, clothing, housing, etc. Thus they need jobs for money so they can meet these basic needs. I agree that society is screwed up but for your own sake you have to find a place for yourself in it.

That brings me to my next point. Society as a whole might be difficult for you to handle, but most people can find certain groups or subsets of society which they can enjoy and be around. Certain personality types are attracted to certain types of jobs, for instance, and when they get into those jobs they find like minded individuals. It can also apply to hobbies, parts of the world to live in, etc.

In the end we all have to find a way to exist in this world, but if you can find a place to belong it becomes much easier.

Or you could try to change society, but I find that many people with mental illness have difficulty with that. They're too busy trying to deal with day-to-day life to handle the large societal problems. It's probably why there's so little good coverage and so much politics & money running mental health care.