All I can say is, good luck with that attitude when you get married and have a family. Your perspective on what is important in life will completely change.
Believe it or not, you can be serious about your career without sacrificing your personal life.
You both seem to be guilty of universalising your own work values and denigrating the choices of others as either "lazy and don't want to learn and grow" or "too immaturely self-oriented!"
Take it from the Bard: "There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy"
Believe it or not, you can be serious about your career without sacrificing your personal life.