Is it normal normal for everyone i know to be depressing.

My girlfriend is horribly depressing and pessimistic, My college friends are pessimists, some just lacking confidence and others being out right defeatists. My mother is destroying herself both physically and emotionally from trying to deal with her mother's bull shit and my dad is resigning himself to living the rest of his life alone and in a town he hates.

I'm not a super upbeat, go getter, with all smiles, but I still try to see the silver linings in life, and have a general attitude that things can always get better.

So is it normal normal that all the people I know are super depressing and pessimistic.