At least in wolverines case, he isn’t truly, fully, immortal. His healing factor eventually slows to the point he gets old and dies. In the case if true immortality like Mr. Immortal, it is most likely part of the power that gives them immortality to also keep the body roughly the same, i.e in working order. Mentally they all probably go insane after a few hundred or thousand years, but the comics do not cover such large periods or accurately reflect the mental state.
To my knowledge, interfering with the healing factor only works while actively interfering it, and if you stop at any point Logan is able to come back essentially post mortem. In some books it is so powerful that he essentially stopped aging when he acquired the healing factor secondary mutation. In the movies, he still ages but much slower, and eventually his body begins to reject the adamantium in his skeleton and his healing factor cannot heal fast enough, leading to his (kinda) death.
At least in wolverines case, he isn’t truly, fully, immortal. His healing factor eventually slows to the point he gets old and dies. In the case if true immortality like Mr. Immortal, it is most likely part of the power that gives them immortality to also keep the body roughly the same, i.e in working order. Mentally they all probably go insane after a few hundred or thousand years, but the comics do not cover such large periods or accurately reflect the mental state.
Isn’t it usually that it gets interfered with, and that does him in?
To my knowledge, interfering with the healing factor only works while actively interfering it, and if you stop at any point Logan is able to come back essentially post mortem. In some books it is so powerful that he essentially stopped aging when he acquired the healing factor secondary mutation. In the movies, he still ages but much slower, and eventually his body begins to reject the adamantium in his skeleton and his healing factor cannot heal fast enough, leading to his (kinda) death.