My sample of 1: I’m (45) dating a younger person (25). In some ways he’s much more mature than my friend group was at his age, but in many ways not. It’s been fascinating to see what his expectations are. His other friends are slightly older (late 20s/early 30s) and all of them still party and do shit me and my friend groups stopped by our junior/senior university years. They just seem to have different expectations of what life is supposed to be like.