There's nothing wrong with liking Normal villagers. It just means that you favor that particular personality above all else, as do I, and the reason why Normals are so beloved amongst the community is simple. Throughout the entire series, they've constantly been the kindest, most socially approachable animals, even back during the early days. They always want to interact and talk with you, and want to make sure you're in good health. Hell, they came off as motherly in the GCN-era; it's really sweet how worried they got when you were absent all day.
Also, they generally have the most grounded designs, further emphasizing their conventional character trait, while still being aligned with the series' stylized, de-formed art style. I love how a lot of Normals have designs based off of what animals look like IRL, with a motif to give them a distinguished, cartoonish aesthetic. Take Mitzi, for example: She's based off a species of pet cats who normally have black pigments in the face, paws, and tail, but they're blue in her case. Siamese cats also usually have blue eyes, while her's are dark. It's a clever reversal.
Whenever I'm in a rough patch, I can always depend on Mitzi, Olive, Bea, Maple, Gala, Vesta, and Caroline to remind me what Animal Crossing is all about. I consider Normals to be the face of the series, and that's never gonna change.
