There is nothing right or wrong about sexual preferences, likes and dislikes of any one. It all depends on how one takes it. Moral policing for some one is the least desirable thing. As you are not doing anything not permitted by the law of the land, it is alright to do whatever pleases you. Please talk to your wife and make some rules of the game with mutual understanding. Also, get her medically examined so that the root casue of your problem is solved.