have you ever had sex with a woman and thought "man that was so great that I'd have waited 5 years, severely and almost irreversibly committed for it, and been able to live with only that for the rest of my life"? no? well you're normal.
dating overly religious girls is a bad idea anyway, and I'm a christian who tries to pray everyday, I just know not to let religion affect my QoL for no reason.
also you're setting yourself up for a frigid wife who only wants to have sex once a week or once a month, or a prudish wife that doesn't like anything. (what other kind of woman would want to go years without sex other than a woman who doesn't like/want sex?)