Our lives are not about procreating.
This idea that we all have to be fathers and mothers is a myth.
As you stated, thee ar emany couples that are childless.
I know there are christians who specifically choose not to have kids. I think that is their right and path.
In terms of getting a wife, perhaps there are issues at hand.
Are you actively seeking and getting yourself out there?
Are you too extreme in your own idea of what a perfect woman she be, look like or act in whatever christian way.
Remember we are all sinners and imperfect in the ideas of God.
The idea that there is criteria to find a woman that will ensure happy days trouble free for the rest of your life is mis-guided. People sin, They repent, People fall down, God picks them up.
I see your problem as this:
Marriage is a coming together of two humans, that God made. Scripture is our personal guide to being christian.
You might very well marry an atheist, and God will still allow you into heaven as a Good Christian.
All you need to do is find a gal that is Christian, and who trys to be a better person and that's all you need.
Just my humble opinion.