I'm a guy shy about my armpit hair, is that weird?

Personal choice. Come to think of it, i don't believe that i've ever seen anyone's armpit hair in my office. Many people in the U.S. Tend to keep their armpit hair hidden from public view much of the time. I believe that it's up to the individual whether to reveal armpit hair or not. I think it's perfectly ok to reveal it in the right situation and if a person is comfortable with it. It's up to you.