I think that risk/ reward ratio will be different for each individual. Some men are perfectly content and able to live a fulfilled life without a woman in their life. For them, marriage, even a good marriage, may actually bring more complications to their life than remaining single would. It would make sense for a guy like that to remain single. Other men may not be able to cope as well without companionship (all Christians should be able to be fulfilled in this life regardless of circumstances, but some will struggle more than others with the lack of a spouse). I think that type of person would do better spiritually and be strengthened by a Godly spouse.
I understand your outlook as I often wonder if I want to complicate my life with a husband lol. I did strongly desire it in the past, but I am very content now and I like the freedom to serve God as I see fit without having to worry about a spouse potentially pulling me away. In many ways, marriage is even more dangerous for a Christian woman than man since men have traditionally guided the marriage. If the guy isn't fit for that spiritually, that is going to be very difficult for his wife.
I don't mean to ignore your questions of statistics in the Western world. Honestly, I have no idea what they are and I personally don't place much importance on them since most marriages I see are not blessed of God nor ideal. I think they are almost irrelevant to someone who is actually seeking God's will for their own life. They do however serve as good cautionary tales.
To sum it up, your odds of finding a good man are 1 / 1,000 and a good woman who can find. To quote Solomon

That math is not encouraging.