Gay Marriages What's The Big Deal?

I thought I would put my 2 cent in this gay marriage. The libertarian view is my view. But isn't marriage for this little guy, to protect him or her, to build a family. Also Hugh Hefner in the news stated "when I was married I never cheated" who cares Hugh. That's news? That's what's wrong with society. My dear Great Aunts and Uncles, Earl, Lucy and Samual and Running Bare were true libertarians and believed in "live and let live".