Because I won't stand for it. They have to be together! *stomps foot and pouts*

wink

Seriously, I think most of the readers and writers are incurable romantics, and we want to see our favorite couple end up together. Some rocky parts are fine along the way, but we don't want to see a big Dead End sign at the end.

"You need me. You wouldn't be much of a hero without a villain. And you do love being the hero, don't you. The cheering children, the swooning women, you love it so much, it's made you my most reliable accomplice." -- Lex Luthor to Superman, Question Authority, Justice League Unlimited