Sometimes I feel guilty of being mean considering his age... he is 70 years old, a lot of years have past and I can tell I am so much alike him than to my mother and that scares me.
In this last year I have seen a lot of his close friends pass away so he feels depressed once in a while, but the times he is not sad, he is behind me driving me crazy, looking for the weirdest reason to argue, and because that I have decided to avoid him, anyway I can. I will probably will regret that when he dies but if avoiding him is the best action to protect my psyche I will do it.