You couldn't be more wrong on this one! I was married a week after turning 19, had our daughter by 21 and have 0 regret! As a matter of fact my wife and I love the fact that we have already lived through things that most married cpl's our age are just now experiencing.
Believe me, I missed out on very little...I simply have had a partner in crime the whole time
The other benifit is that I will be 40 and an empty nester, healthy and mature. In a position where I can still enjoy life while others my age are changing diapers and playing soccer dad! Meanwhile I am able to take vacations and do whatever I want with more financial and mental security than I ever had in my 20's.
What did I miss out on? Banging whores and wasted time on dumb relationships. Knock yourself out...it's all meaningless in the end!