Wouldn't you sweat more because there is less hair to catch it? Then it get on your shirt... I could be wrong though.
Armpits are suppose to be hairy on a man, and trimming makes it look unatural! Men should be hairy, and trimming chest hair and pubes is a diff thing! Keep the pit natural!
This. I don't think people know what I mean when I say "trim." I use a 4 or 5 grade for my clippers, meaning my pit hair is probably over half an inch. It looks like a swampland when it's not trimmed, so this is the better alternative.Trim, but leave some length for good measure and a Tamed Nature look.