I do too! I make alts in every game I play. In FFXIV I have eight characters and I always felt like I needed to find some proper justification for it whenever I wanted a new one. I don't know, like a weird mix of guilt or self-consciousness but not really either of those things? It's certainly not a rational thing.
God I hope this makes some sense to you and that I didn't just proudly reveal myself to be a maladjusted obsessive altaholic to someone who just doesn't want too many alts for a totally normal reason lol.
No, I get what you mean!
I think my weird feeling in AC may be that I like being the only human on an island full of animals. Throwing more humans in makes it feel less special.
Also, I'd feel like if I had more characters, I'd have to interact with all of my villagers with them every day or it would seem weird. And that seems pointless to me.