Try and forget that it's a diaper that your husband enjoys. We all attach images to items and the image we have of diapers aren't what we think of when we see an adult, or in your case your lover. If your husband enjoyed the feel of satin sheets on the bed you would likely put them on the bed to please him. If he liked to cover himself and you in baby oil, I bet you would be the first one to go for the rubber sheets. Wearing diapers gives him pleasure, but not nearly as much pleasure as he would have if you accepted this fetish of his. I'm certain that once you get over this hang up, he will give you all the pleasure you are looking for, because he will feel your love and acceptance for him at a whole new level.