Probably because
Darby sounds like Derpy, not a positive association.
I knew a female
Darby growing up and she never liked her name. Our classmates thought it wasn't attractive as well. I suppose because it's awkward sounding.
I don't hate it but I don't necessarily like it, but I feel the same for
Darcy as well.
Please rate my "Names I would Use" list & "Backup Favorites" list. Feel free to rate some of my other lists too if you have the time.
https://www.behindthename.com/pnl/223226/138473