Animal Crossing is basically a game where you gather all the furry waifus you possibly love and bring them to your island where you can be your own Harem Protagonist.
It's like a Gacha Games, like Fate/Grand Order, but for kids and adults, instead of summoning sexy female interpretations of historical figures to take to your home and have perverted fantasies about. It's inviting animals and pretty much doing the same thing.
Not saying it's a bad thing. Does anybody literally look up porn of every single female anthro that comes onto your island? I do, gotta collect all those half-naked furry waifus!