What if a 10 year old wants to were diapers for no reason?

Well it depends on who you are.

If you're the 10 year old's mom or dad, then your child has somehow grown a liking to wearing diapers. This is not an uncommon thing, it's just not very well known. This could be for many reasons; Maybe Was in diapers later in life than usual (4 years old maybe) and/or can still remember what it was like wearing them and feels like it was better that way. Or maybe he has alot of stress in his life. Maybe for no known reason at all. Basicly, what it is, is a diaper fetish. You can decide wether or not she is allowed to participate in such things.

If you're her friend or buddy, than somehow, by the way she was raised and what her background history contains, she enjoys them for sexual reasons. If you have just now found this out, I'm sure your perspective on him has changed quite a bit. But this doesn't mean he's a gross little baby, alot of people have the same sexual attraction to diapers and most of them can sepparate it from the rest of their life. What I mean is, they can have fun being a little baby in the morning and once they've had their fill of it, they can go about their lives as if it never happened. Just like everyone can walk around like an average joe with a completely netrual life right after sleeping with someone. So don't rip yourself away from her because of this, how would you like to loose your friend because of a nearly uncontrolable sexual addiction?

you have Infantelism, its not uncommon