I must have some odd gene or something, but as much as I love potatoes, I've never been able to eat sweet potatoes. As a kid I would eat the marshmallow topping but that's as far as I would go with them.
I will eat but like you don't particularly like. I don't have a sweet-tooth. Give me another helping of that prime rib, and mashed potatoes and gravy, and skip dessert and the sweet potatoes, especially when made more sweet "Southern Style." Likewise unsweet tea, not sweet tea, for me in summer. You aren't alone, the gene-pool is large.