I agree... It's a once in a life time thing. And it's only ever the QBs that do it. You don't see RBs out there saying they won't run the 40, or WRs for that matter.
It should be a given that you have to participate, unless you have medical reasons of a serious nature. If a player wants to go that way, it raises even more serious personality questions then if the guy can throw the deep ball.
Thanks to VIPER!