Male gets pleasure by simple act but female get enjoyment from emotions involved in the act.You did it mechanically, every time! You were not involved emotionally and that might be major reason behind your non-enjoyment. I wonder why you kept on doing it even though you were not enjoying?! (Were you just addicted to the act?!!) If your husband will be of your choice and if you will be able to develop strong emotional bond then I do not think there will be any problem.