Why do you want a diaper?

Since this question is in the Fetish area, I'm assuming you're asking about a diaper fetish. This is not an uncommon fetish, as these things go. Some possible explanations: association with the comforts and security of babyhood; "permission" to relax the muscles in the anus and bladder; a desire to be humiliated. Truth is, there are probably as many explanations for a diaper fetish as there are people who have one.

We humans have an extraordinary ability to create fetishes, probably to increase the number of potential sex partners. Of course, if a diaper is an absolute necessity for sex, the fetish has taken over -- not a good thing!