It’s not bad at all! Presumably, there’s nothing wrong with you or him, it may just not be something you enjoy. That’s normal and fine. Everyone has things they like and dislike in regards to sexual activity and as long as it isn’t actually hurting anyone (you know, in the bad way that they don’t want), there’s nothing wrong with your preferences. Try it in new ways if you feel like experimenting with it, but overall, you definitely don’t have to enjoy it and can stick with doing other things you like better!