It depends on your priorities, though. If you want kids, you need to marry fairly young. Biology is not your friend as you age -- the risks to both baby and mother go up, and then there's the ability to get by on almost no sleep which drops with age. But if what you're looking for is a life partner who will enhance all the areas of your being, then yeah, you're better off waiting until you are a more well-developed person, and your age-mates are also more well-developed.