Well, I could make a dozen jokes about getting married being a choice for celibacy, but let's skip that and address you point.
If having sex with ones wife alleviated natural urges to have sex with other women, there wouldn't be so many people fooling around out there. I was addressing the issue of overcoming natural urges being a choice, and it is a choice.
Well, I think it might “alleviate” more than you think. And it also begs the question: Is it just about sex? Marriage is about a lot of things.