Exactly. I don't want to post the URL that I saw on Tosh.O but suffice to say google "sensitive nips" and you'll learn things you wish you hadn't.and besides, men's nipples aren't exactly useless.
ANyone with this problem coats them with Vaseline. They even have a non-greasy kind available now.
You're a runner I take it? If not and you have this problem, there's probably something else going on with you.