Where's The Arm Pit Hair?

I have a question - no one has been able to give me an answer - yet - when you see a commercial on T.V. for men's deodorant..........why is it that none of these men have arm pit hair? Or - for that matter - a hairy chest? Or for that matter - when it comes to any shaving commercial - other than a man's face - there isn't even stubble - women are shaving completely smooth legs - why shave your legs if they don't need shaving? Anyways - I just thought that maybe someone out there may have an answer for me. Cheers and Thanx!