What's different about being older?

Having been to a few birthdays recently I wanted to think about what it means to get older. How am I different than I was ten years ago. I think the biggest difference is I've settled into a routine. I like where I am and I don't really want to travel that much anymore. I find my career enjoyable, I don't want anything to change. Maybe it's just that I have more to lose psychologically from leaving my comfort zone. Then again I'm pretty spoiled. I find more and more that just collecting and cultivating the bits of creative youth still in me is very important.