DH and I met March 5, 1957, engaged in May (why I can't remember the exact date I do not know

) and married September 27, 1975. We were both 18, and had just graduated from high school in June.
Back then I don't think a college education was quite as important as it is today. DH was already in partnership with his Dad, farming several hundred acres of land and right after we got married we started buying half of his Dad's hog raising business (1000 head). So he had already chosen his career and was doing well in it.
Yes, we were expecting our first child when we got married. But. We didn't even know I was pregnant until 2 weeks before the wedding so we didn't "have to" get married.
I quit work (local Credit Bureau office) when we got married, to stay home and be a full time homemaker, wife and mother. I know I was very fortunate to be able to do that. In today's world I probably couldn't.
We will be celebrating our 36th wedding anniversary in September. Yes, we've had our ups and downs, mostly early in our marriage, and probably because we were young. But. We took our wedding vows seriously and worked things out each time we had a problem. If we wouldn't have been able to work it out on our own, I'm sure we would have gone to our pastor or a marriage counselor but that was never needed. So in that way, I think we were more mature than some older people who get married.
Just because the couple is young doesn't mean the marriage isn't going to work. I've seen marriages between couples who have college degrees and are older that didn't work out. I think commitment and communication are two of the most important things in a marriage. If a couple doesn't have those, then I don't think the marriage will work out no matter if they are 18, 25, 30, 40 or beyond.