I guess younger men can be immature but there are those that can be even more mature than older men. My husband is close to five years older than me and I married him when he was in his late twenties. He's as childish as they come. He wants me to give him my full attention all the time even though we already have four children. It's like having five children to take care of.But more than ever, younger men are immature. So it's like having another son that you have to guide and look upon. But he is sweet and caring anyway.