I usually avoid YA books like the plague because 99% of the time, I find that the teenaged characters are almost ALWAYS annoying and bratty, yet paradoxically mature beyond their years. Yeah, right.
Plus, I can't handle all the flighty and stupid-sounding teen lingo (O-M-G! Totes!). It's just not cool, cute, or entertaining (although I'm sure teen readers love it because hey - that's the target market, right?). My parents seriously would have killed me if I so much as uttered the word "ain't," much less all the other crazy vocabulary used by teens nowadays, which most of the time I need to google to even remotely understand what it means.