The best kids are going to become the best. But the best thing about it is that you're going to learn lessons in playing those sports about winning and losing and teamwork and teammates and arguments and everything else that are going to affect you positively for the rest of your life.
I tend to do something for two years then move on to something new. Yoga, then biking, then weight lifting, then back to biking. The moment it feels like a rut, I switch and search for a new love. It's like having a midlife crisis, but without the new wife or cheesy BMW.