Arm pit hair is grosssssss. I've dated guys that shave and it's kind of sexy in a weird faggy kind of way...haha I just had laser hair removal and I never have to shave again! WEEEEEEEEE!
MY wife has tried to get me to shave mine. No way! I trimmed it once when I was 14 and it itched like crazy.
Some guys should just trim their pit hair at least. It looks like they have Cousin It growing under their arms. Plus the more hair you have under your arms, the more you smell. Hair is a breeding ground for bacteria and stinky stuff.