Ha I completed your details before I read them
This is a common question. Either
1.) Religious people DON'T have a problem with it, so stop accusing everyone religious of trying to intefere
2.) Religious people are highly strict, and lack any tolerance and thus try to interfere, and strike up your issues with them
3.) It's not just religious people who can be against gay marriage. Plenty of atheists are against it just because they find it gross or straight out wrong
I personally, as a religious person and as a secular being of this world, am not again gay marriage
EDIT
Okay, and why do people assume that religious people (or Christians, as people directly skip to them) think all gays go to hell. Sure, homosexuality is a sin, but what happened to Jesus, you know, one of the dudes the entire religion revolves around? Jesus enabled forgiveness because we're ALL sinners. Since when did homosexuality become the unforgivable sin?