How often have you changed your hairstyle?

Am a bit envious of those who radically alter their appearance on a whim with a new hairdo. I've only had two 'styles' in my life. Longish hair till I was in my late twenties. And then a shoulder length bob until...well...now. The colour has changed disappeared obviously but other than that it's basically the same. Is it too late to go for a drastic chop?