rob4u777: At what age do men grow up?
Most of them grow up when they move out of home & have to fend for themselves. Sometimes they grow up a lot earlier if they have rough child-hood experiences, or a lot of responsibility and worry early in life.
Personally, I like people who aren't entirely grown up. We were all so excited about life when we were little kids. I think the happiest people on the planet haven't lost sight of that child-like excitement about stuff.