overall I;d say love. And keep in mind love isn't always a positive thing. Anakin truly loved Padme and wanted to save her, then that love turned to love of power, love of control, and so on and so forth. You wouldn't say that its good for someone to love crack...same type of situation.
Love does in fact conquer all, and it went full circle....Love conquered Anakin, turning him eventually evil...then love (for a son) conquered the Sith (Vader who took out Palps) and turned him good again and saved him.
I hope I made SOME sense...I'm kinda drunk, lol. drunk