Given the choice, against, although it is the lady's choice. i have never been out with, or even known, any woman who does not shave her armpits - as for elsewhere, that's not for dicussion here.
I'd have to agree that it is the womans choice, however i would be against it simply because its very rare, you dont expect it in any woman these days and its just the way some people have been "brought up" as it were
Personally I don't mind a little bit of growth under the armpits....used to know a Spanish girl years ago,and when she emerged from the changing rooms dressed in her swimsuit,she had so much it looked like she had two hippies in a headlock!!!...still makes me shudder to think of it...