Let’s be honest, you never really had time for these friendship behaviors to begin with, but once you’re an adult, have a somewhat involved career, make an effort to sleep eight hours a night, exercise regularly, and have a committed relationship, you really don’t have time for these shenanigans. You learn fast when you enter your 30s that energy is a powerful thing, and that some friends take it from you, and some friends give it to you. You also learn that you barely have enough energy as it is so you really can’t afford to hang out with those who take it from you. You also start to cherish your alone time more, just as it gets tougher and tougher to get it. So you’re not handing it over to anybody who will act petty, or who won’t appreciate you. That’s why there is some friendship behavior that just has to stop after your 20s.