It calls for a cleaning up of your current lifestyle. Interestingly enough, those couples who live together without getting engaged or married, do not seem to follow the same change in lifestyle. They maintain the same habits they had when they were single. Whether they go to college or not, young people leaving home tend to increase their legal and illegal drug use. Away from the supervision of parents many young people feel that the sky is the limit.
Marriage brings a return to stability.
There's less going to bars. There's someone to whom you feel a sense of responsibility.