Wolverine: Old Man Logan - Mark Millar

How does an immortal age? That never made sense to me but I alway let it go that you hit a certain age and stop, so an old Wolverine, the one time homicide mutant turned superhero, started me off wrong, and yet I did greatly enjoy this comic. The idea is 50 years after the super-villains conquered the world and Wolverine, now a farmer pacifist gets recruited to help a blind man drive across country. It is only in comics like this, fantasy one shots, that I like the extreme story-lines and Millar does a good job here, painting a horrible world in only a few strokes. I actually would like to see the story continue and to have the background fleshed out, but I realize that if it did it would probably fall apart.