Diapers have nothing to do with religion. However if it is sexual it is. As long as you are with your spouse it's fine, from a religious point of view.
Obviously if you like the diaper its not just the diaper, it's most likely that you like going to the bathroom in it. And I don't just mean pee, but a lot of people fantasize about going poo in a...
There's nothing wrong with it. It's actually very common for teens and adults to want to wear diapers for multiple reasons, from sexual to convenience. If it's a matter of parents, that's another...