There are plenty of unmaried people who would like to marry but can't find a Godly spouse to share their lives with. That doesn't make them sinners!
Either all these single people are the same sex or they're not meeting one another. If the church or denomination you belong to isn't producing the kind of spouse you want, you may have to make some changes.
I'm not speaking about myself - I'm happily married for all of five months now. But I didn't find my husband in church, I usually attended small congregations of less than 200 people and the other things I was looking for in a spouse made finding one tricky.
But I found a Godly, conservative, homeschooled, geeky engineer with complimentary interests here on FreeRepublic. A lot of people aren't so lucky. Are churches just supposed to match up their single folks? "Here, you're assigned Tammy and you get Doug". There's more to a compatible spouse than just the same church.