Re: The Cure from X Men The Last Stand: mentioned in Wolverine...
Wolverine didn't want to give up his healing power, and he didn't want to die. He had retreated because he didn't want to hurt anyone else again, and he thought he could do that by becoming a recluse and keeping himself from getting close to anyone again.
He flat-out refused Yashida's offer, so it's not what he wanted.
The cure doesn't work anyway, so there was no reason for him to seek it even if he wanted to.
"You change the world when you change your mind.