I was lucky and got to do it as part of a university study that my partner (he's a uni lecturer) was running. We didn't do full 0G but we did 0.75, 0.5 and 0.25 in different parabolas - the sensation is difficult to properly explain, but it's fantastic.
Totally agree that it would take a lot of guts to do it, but If I had the chance (phenomenally unlikely, obviously) I'd do it in a heartbeat.
Of course there are risks and always will be, but the reward would be worth it in my opinions. I got to experience partial gravity on a parabolic flight...