Like 'acquired taste', Acquired Hates
is where you may initially like something, only to then realise after a fashion that it is, in actual fact, completely shit
The feeling of utter, childlike embarrassment
when reminded of your previous love of that thing is without compare.
I give you:
Franz Ferdinand are such Acquired Hates. I used to think they were cool, but now I would rather kill a baby than listen to them ever again.