I've seen a few people with that, I think the jump in evolution charms 'em.

[Because nothing says 'precious' than a flopping useless fish that evolves into a very angry giant dragon snake thing. God bless you, Pokemon world.]

[He actually cheers up a bit at the attachment.]

Sounds like ya would get along with Whitney over in Goldenrod! She finds 'em her favorite too. I've chatted with her a fair bit. From what I know, ya would find Clefairy and the like over in Kanto. Aah... Mount Moon, that's where it is.