Tru, tru-look, even Superman has 'died' 3 times.......... and he's still flying Lois around Metropolis to this day!!!
It's more of a 'marketing tool' than anything else......I think they'll end up keeping him 'dead' until the presidential elections........or the is whole war thing takes a major turn......but that's just my thoughts.
I'd go into more detail but I don't want to start a huge debate here-this is a place to have fun.......
