The diaper turns you on because if you're a guy like me the diapers wet sap feels so good against our penis.
I know when I wet a diaper it feels even better than a dry diaper and it instantly turns me on and gives me an erection.
I'm not sure what causes us to love wet diapers or just love wearing diapers in general but I agree it does feel good.
I too love a squishy wet soaking diaper and I love a wet diaper sagging between my legs when I walk.
You and I certainly are not alone in our love for wet diapers and love for diapers. There's thousands upon thousands of other diaper lovers out there that get off to wet diapers.
There's nothing wrong with you or I and diapers don't harm anyone so don't worry about it.