I think the problem is that people that are associated with the selfie are considered boring, stupid and unoriginal. Like your ugg wearing, panera bread eating, starbucks drinking, iphone using, trend following zombie. Which is the case for a large portion of them. The worst selfies have to be those that are proclaimed by the owner to be original and relevant when the statement is absurd.

nothing really. when something gets popular haters are created

It's everywhere. And it's stupid.

Well i don't like them since its a fad but people also might hate them since there everywhere and most of them aren't good.