Meh. People complain about not caring about characters deaths if you know they're gonna be back, but if it was always permanent, we'd never get to see story arcs around characters like Captain America dying. It would never be a discussion about whether Batman was gonna die in the next issue of Final Crisis. We know the companies would never kill major characters whose deaths would be permanent.
Suspension of disbelief happens either way. At least this way we get to see things like major characters dying and having impact on the story as a whole, thus adding (if done properly) to the arc, though we know they'll be back sooner or later.
