I met my wife at 37 and married at 39. Best decision I ever didn't intentionally make :)

But looking back, I had a TON of growing up to do before I was ready to seriously commit to marriage the way I personally view it. Pair bonding for life. Sure, people, things and desired change, but I've watched far too many god awful divorces to ever want to go through that, so I wanted to be really sure and I totally was. It's been an awesome 16 years.