I ask this because recently someone broke off being friends with me after years, stating all I ever did was "wallow in self-pity" about an undeniably shit life but said it was too much to bear to listen to anymore and just ditched me. Needless to say, I'm pretty confused. I stubbornly insist if you are justified to do so, you can pity yourself but when I Google it seems people that do such things or sulk are universally disliked. Thumbs up for people that saw this anime called "Evangelion" as a bonus.
But I thought why not ask here among other places. Like, if they have a good reason, do you at least sympathize with someone that acts like a victim forever? What if said person was your friend and raped? Would it bother you if that friend from then on was always negative and brooding about how horrible his/her life is.