why aren't guys as meticulous with their 'pit hair as girls?

Answer 1

Guys don't wear sleeveless shirts nearly as often as girls.
Guys aren't judged by (most) girls on their pit hair.

Answer 2

Men aren't as meticulous in most areas as women. It's a trait of men. Most men are covered in some much hair, it doesn't do any good to shave or trim it.

Answer 3

i shave mine