Look at people who love to play sports as adults. Or people who play professional sports. Even people who have been successful (with happiness & great mental health as part of the definition). None of them say "my parents forced me to play even when I really didn't want to." Passion is a piece of success. There are lots of ways for a kid to be active and to teach great lessons without forcing them into an organized sport they really don't want to be in. The biggest one? Unstructured play.