There is no one size fits all answer here.
You are not in charge of yourself as a child, so when you become an adult, for the first time in your life you run the show. You can afford to be selfish and make decisions all on your own.
Enjoy this time because it is all about you.
When you get married, you lose this power. You now have to put your dreams and desires on the side line and make joint decisions from now on.
Let me clue you in here, "joint decisions" means keeping the little woman happy. If momma is not happy, there is no peace in your life.
This does not mean you are doomed and your dreams never come true, but it does now depend on who you decide to be with and what they think about your dreams as well.
Another thing to consider, when you become middle aged, do you want a middle aged wife or would your sex life be better with a younger model?
There are three paths that you can go down.
1. Marry young, have a family, get divorced, live poor the rest of your life.
2. Mary young to the right person, raise your family and still be young enough to enjoy your life after they are raised.
3. Enjoy your life now alone and raise a family later on in life perhaps with a younger wife.
Obviously, number one is a bad choice.
Number two is uncontrollable. You could marry the right person, but one of you could change into someone different. It would be neither of your fault. Some times people change. You might be able to know you will not change, but you can never know if your partner might change or not because they might not know.
Number three is safer because the longer you live your life, the better you know yourself. You are better prepared to provide for others and have more wisdom. The thing is, you are older and more tired too.
There are risks with everything you decide and no way to ever know if you made the right decision or not because you do not have complete control any more.
You could mess up, or your wife could mess up, and the both of you should go into this realising there is no perfect life and there will always be hardship and challenges.
There is also love, affection, gratification, and contentment as well.
No matter what you decide, it will not be easy. There are things you will miss out on as well as things you would have never known with out taking the leap of faith.
Take your time and choose well.