I kept four of my clients and still design embedded electronics and write firmware for the devices. For fun I teach Embedded Computing at the local high school. I have only one class each day, but the kids are techie types who relish the class. I also mentor their robotics team. These are well behaved kids who are a pleasure to know.
Good you have that,but when I leave my work I’m gone,no going back,I’ll leave it to the young bucks;)