I know that having married me at age 22 (I was 23), my wife was well into spinsterhood by Phil’s standards, but we were on the young side in our crowd. My wife has put up with me for 30 years and counting. Hoping for at least another 30.
Generally, I agree with the overall sentiment - for folks who are moderately mature, marrying young is better, if circumstances permit.
In Viêt Nam the traditional marrying age was around 14-15 for girls and 16-19 for boys. The Communists who do not meddle in marriage practices much at all did decree that females must be 18 to marry. Outside of the big cities (big cities are a lot alike everywhere) that means that many defacto marriages become de jure when the wife turns 18. There is a family ceremony (quiet church wedding for Catholics) when the marriage actually begins with big engagement and legal wedding ceremonies when the bride turns 18. Many families do observe the law and keep their daughters unmarried until 18. That results in a drastically narrowed window of marriageabliity for the girls. Their prospects diminish until about 26 when they disappear or become matters of desperation. After that age a woman can pretty much hope only to be a rich man's second wife or get a loser for a husband. Most such women stay in their families as maiden aunts, which is not a bad deal in itself, or manage to set themselves up with trades like sewing or selling in the market. Or, if lightning strikes, a heretofore spinster might meet an American man and after proper vetting by the family, marry him. American men are the dream of many mothers for their older unmarried or widowed daughters.
My friend Art, the successful attorney who got divorced and stripped by his attorney wife, rather than kill himself, which he considered, went back to visit and reminisce in VN where he had been to war many years ago. A conniving mother and father trapped him (he never suspected) into marrying their widowed daughter who had a child. It is the best thing that could have happened to him. He has been there for 8 years. I don't think he will go ever back. When he told me about his amazing good luck and after I had met the in-laws, I knew how it had come about but I have not told him. The in-laws are retired party functionaries so he doesn't have to worry about visas and the like. He is retired on his SS in Nha Trang now with his delightful wife and daughter.