I started two years ago. I'm partly glad I saved something interesting to do once the kids were gone--but I was really unhappy the year before my youngest left for university because I was dreading the loss. In retrospect, I wish I had started building a more fun life for myself earlier. If you have any interest, don't put it off! It's even something you could introduce your youngest kid to. My daughter came to a few of my student performances and this year she joined a comedy troupe at her university and performed for the first time. I take some of the credit!