I wish people wouldn’t make a big to-do about leaving. They make a big announcement, delete their account and then come right back sometimes less than a week later. I’ve gotten ticked off and left, but I didn’t tell anyone. I just slipped out and came back several months later and most were none the wiser.
I think when people kick up a huge fuss over it, they want attention more than they want to leave. Most of the big huff people have friends here over Facebook and whatnot—and they want their friends to beg them to come back. Just my opinion, but it makes sense to me.