Hobbies are even better when you are getting progressively older. If you're retired or think you might get there one day, one of the gifts of that is time. Is there something you have loved to do your whole life but didn't get enough time to do it? Is there something you wanted to do but work, kids, house and other responsibilities got in the way and you just never got around to it?
Do it now! Pick up a guitar, a paintbrush, a crochet needle and try it. You're not too old, you're just in time!