You know, I try not to patronize the Walmart fish section, I actually kept complaining to the Walmart down the street from where I lived and when they stopped stocking bettas, I like to think it was because of me (rather than the fish not selling), but I'm a big believer in your pet choosing you.
When I went to pick out my last betta (who wound up being named Mishi), I knew what tail type and wanted and what colors I wanted and he was nothing like that. He didn't even react to me when I picked up his cup, he just kept looking at the same spot in the store even when I moved his cup, but I knew he had to come home with me. Instantly and even after a couple of weeks, I kept wondering if I made a mistake and bought the wrong fish, if I could be satisfied with this one or if I needed to go get the one I really wanted. But, even through all of the work I needed to treat his mysterious illnesses, his special needs, his constantly raggedy fins, if you told me I could go back and swap him for the exact fish I wanted on that day I bought him, I absolutely would not change a thing.
Yea, I think most of us are just a little bit nuts.