Why is it assumed that all back players are a bunch of fat old men who don't move? I'm 16, and in perfect health, I'd even go so far as to say I"m "fit" and I play back. Could I play front? Absolutely, I'm fast enough, I'm pretty good at it, I just like playing back (nothing more satisfying than watching some poor bloke walk right into the lane you're shooting
) Back players aren't there for no reason, if it weren't for back players, front players would never get to the front. Even if the big old guys are phased out of the sport, there will still be back players.
That being said, that really sucks. Nothing less fun than having something that's "for every sport" turn out to be a fitness test for the mainstream. By the way, with all this talk of sports that require no fitness, how about airsoft shooting? That's an olympic sport. Or bowling? I've seen pro bowlers, alot of them are worse off than the old, fat back players.