Modern men now live in an extended childhood until about age 29. They sit around playing console games and surfing internet porn and not accomplishing much. Women are now getting 60% of the college degrees in the U.S., because they are more focused and responsible. I live near a university campus, and even though it's a coed campus (University of Minnesota) about 95% of the regular joggers are female. The men are presumably sitting at home, flabby, and scratching themselves. If you want a mature guy, you're probably going to have to date a guy who is at least in his thirties.
Good decisions come from experience. Experience comes from bad decisions.