All the above! Some can scream out those high notes after 40 but not many. I think it doesn't help that he hurt it during the SWW tour. I don't know how painful blowing out your voice can be cuz I'm not a singer (even though I attempt it in the car ). I know after a Bon Jovi concert my throat is sore & I'm hoarse the next day so I can't imagine doing that night after night. I also don't think that it helps that he smokes but it's his life not ours. We can only hope that he'll quit. However I do like his voice nowadays so I don't mind that he can't always hit those high ones.