pax...feel blessed you don't have Trek420's past crazy neighbor 
I have some interesting people living in my building and have some good conversations and the occasional dinner. I just don't let negative people affect me and i have lots of other positive/productive things to do rather than socialize much in the building anyway. perhaps riding more and lesser crowds will help......and reading on the beach
‘The negative feelings we all have can be addictive…just as the positive…it’s up to
us to decide which ones we want to choose and feed”… Pema Chodron