Does Love at First Sight Exist?

I for one, Do not believe in love at first sight. It never really worked for my family. My grandmother was married three times, my step-grandfather was married twice, and my father was married once. I think love is a way of saying, "hey, I've gotten used to all the stupid stuff you do and you got used to me, so, why bother trying to do that with other people". Except, you can't always to that. Just about every one in my family has though they had a love at first sight moment, but it was all a fantasy. Sometimes, Those that we have gotten used to can hurt us when they try to leave.