Ahahaha, Hashirama is hilarious. I like him a lot.
Aaaand apparently the Uchiha are now genetically predisposed to become emo.
Actually, I don't know about the majority of people, but I'm sort of willing to give the writer a bit of a break on that one now. Not so much forgive Sasuke, but at least the writer gave us something of an explanation as to why he (And Obito and Madara) are like that.
So...
Love makes you evil, and grants you the power of hate.