I relate to the feeling. I am extremely cynical. I fully believe the world is fucked and we are in for a very turbulent 50-100 years. I still work to improve myself and the world because WTF else are you going to do? At least doing something feels better than doing nothing.

I've just grown to really respect older people who manage to stay excited and optimistic. It's so much easier to become a cynic, and I think it required effort on their end to try and be a positive person.