Because maybe, just maybe, if people loved each other a little bit more and focused less on hate, things like this would happen less often?
While I understand the impulse to write the "Love always wins" message as being superfluous and empty , I think about what I want to teach my nieces and nephews about the Orlando tragedy (They are all 6 and under).
I could teach them to not trust muslims, and that the religion is evil and vile, OR, I could tell them that the measure of a man is in his actions, not what God he prays to. Be tolerant and accepting of others beliefs, but never follow anything or anyone blindly.
If this terrorists father had sat him down one day and taught him it is wrong to hate homosexuality, even if you don't understand it, maybe he wouldn't have gone off the handle this way? (and by the sound of it, the guy was a closeted homosexual).
I could be wrong, maybe love isn't the answer (but then all of the uber religious people in this thread would have to concede that their belief system is fundamentally flawed) - but if hating or loving has no bearing on a given outcome, then I would rather live my life loving my fellow man than hating them. Less stress that way.