A better question is how will they end... I don't think that's gonna happen in near future, especially with some heavy based religious people.
Religion did a lot of damage, yeah but it's about a human beings and our nature for conflict.I don't think that religion should die, instead, it can not be taken that seriously and waged wars for that etc...
Ok, someone says i believe in God, i believe in Allah or any other deity or whatever, that does not mean i should kill someone for believing in something other than me.Religion...a weapon for mass control.