Like you, they think the guy should be enthused and eager to experience marriage, commitment and children. Unfortunately, men are rarely as eager to marry as we women would like. It's almost a knee-jerk male reaction to come up with lots of reasons why they can't commit. It's nothing to take seriously and of course you should try to pressure him. If you don't, it won't happen.
Most women pressure men into marriage.
They resist, you pressure. Then they finally propose. They like to think it's their decision. That's the way it usually happens. In your case, you got a guy who couldn't decide to lose his virginity until he was 26.