It's ok to want an animal because you tink it looks awesome, or would be cool to own.
Like Mike said though, if there isn't any other reasons besides that fact, then you have no business keeping that species.
I got my Yellow because they're neat and unique, but it's not the only reason I got her. I wanted a snake that got big, but not as big as the others. I know I also wanted something in the boa family, and something that isn't as kept as much as other snakes. I did my study on Yellows, and I talked to Matt a lot before I ordered, like 2 months before I even purchased my girl.