When a women is pregnant she stops having her monthly 'issues', she also gets health benefits from the baby etc stem cells. These things are a massive benefit to her reproductive system. Women had children past 40 in the past because they started in their teens.
So while what you said is true, what I said is also true.
Pregnancy is one of the greatest gifts to mankind!
For the woman, while she's still developing, say 15-18, her mind, body, and soul all develop greatly from a healthy pregnancy. Since she's still developing, her brain will be aided permanently by the flood of positive hormones, as you've descended her body will be helped aswell due to the billions of stem cells, and her soul will benefit greatly as her attachment to something besides her husband causes her heart to grow three sizes.
A bad pregnancy however, you know the story. Caused by a man who is young and irresponsible, or old and irresponsible. A great middle ground is a man that's 2-7 years older.
Mary was pregnant at 15, her husband Joseph was 22, correct me if I'm wrong. That is the model relationship.
I agree with the sentiment of 16-18, as a young man these are the best ages for women without a doubt. I have had tremendous issues with my mother and never found a woman older than that attractive, I think it's weak willed men as described by Tom who will gravitate toward older women.
God is masterful in His creation. Your woman will benefit greatly from the process, and the man benefits by having offspring and a help mate. Your children win. Everyone wins. The Jews lose. Praise God for marriage and fertility!