QOTD: I played school basketball and volleyball and league soccer, fastball and karate when I was younger and I basically lived on an ice rink as a kid (though girls "didn't play hockey" then...still pissed at that!). Have played some softball as an adult on a beer league and these days I play street hockey with friends whenever we're all free on a Sunday and it isn't raining. I'm not nearly as fit as I used to be unfortunately but I love sports.
I'm not sure that I would ever discourage my kids to not play a particular sport except for anything to do with guns and probably boxing or that insane "ufc" or whatever it's called. Of course I'd rather they chose 'safe' sports and will likely enroll them in sports that I think are 'better' or 'safer' (if they are sporty) but if they were really passionate about a sport I hope I would support them....even if it meant having a heart attack everytime they left the house to participate in said sport. Of course, when faced with the reality of it...I can't say for sure.