I haven't read through all the posts, I'm just responding to the OP's question, and for me the answer is no - it is not that unusual. My husband and I got married when we both had one year left of college. He was 22 and I was 21. We finished school, got jobs in our respective fields, bought a house, waited over 5 years before trying to have children (we were blessed with 2), and just celebrated our 33rd anniversary last weekend. We are in a fun and exciting place now and things are good. We are both considering retirement in the near future and I can't wait for that phase of our lives to begin.
The smallest deed is greater than the grandest intention.

I am the master of my fate: I am the captain of my soul. (Invictus - William Ernest Henley)

Just think I used to worry 'bout things like that,
Used to worry 'bout rich and skinny, 'til I wound up poor and fat,
Nowadays I kind of worry where my mind's been at,
Just think I used to worry 'bout things like that. (Delbert McClinton - I Used to Worry from Never Been Rocked Enough)