Why are we really interested in Caitlyn Jenner?

So Bruce Jenner officially said farewell to his former male identity by introducing the world to Caitlyn Jenner Monday in, quite literally, the way only a major Hollywood figure could: via a Vanity Fair cover previewed in a tweet. As a social media connection of mine mused earlier in the week: "Sadly, this is probably the only way that (VF editor) Graydon Carter would ever agree to put a woman in her sixties on the cover of Vanity Fair."