It's a shame and I feel bad that he has these limitations already, especially at such a young age
But I will say I highly doubt he regrets making millions, being a Super Bowl champion, and enjoying the height of his profession. It's easy to look back and say you wish you never did something when you've already done it and lived it to the fullest. He'd be kicking himself with regret even more if he went all the way through to 36 without living out his physical gifts to the fullest. Most people are just not wired to pass up these kinds of opportunities and be perfectly okay with it. So yeah, now that he is having troubles it's easy to say "I wish I never would have" but come on, he's not trading those experiences
It reminds me of women who chose to slut it up all through their teens and 20s then turn around as a more mature adult and say "I wish I was a virgin again". Come on, no you don't. You would have never let yourself get to this point in your life without experiencing that. If you did, you'd be bemoaning the fact that you are still a virgin and don't know what sex feels like. So yeah.. not buying