It isn't realistic at all. Who cares when you were "supposed" to die, you didn't. Now you have all the time you can take. Do something exciting with it instead of being all glum about how it isn't yours.

[Seriously. Is this some hidden part of him that she hadn't discovered before because she never asked? Take it back, Law, she likes the cocky asshole and not the mopey idiot with some sort of strange guilt over a free handout from the multiverse.]