So it's just because of love?! He wants to erase reality and put a new one in its place because of love? He doesn't care at all about the way his world works?! Is that what you really think?
People blatantly, moronically, and barbarically have taken their/others own lives in attempt to free some void in their feeble hearts because of love. Why can't you comprehend to which Obito would do the same? He is a psychopath, he's been manipulated from the age of 13, and has multiple persona's.. This is all directly triggered by the loss of Rin.