I wouldn't recommend doing that. Doing something to mess with your bladder is not a safe thing at all.
I have 15 year old nephew who is incontinent and has to wear diapers 24/7 and he's miserable.
You might like diapers but I'm sure having to make sure you have a spare diaper or spare diapers and changing supplies with you and somewhere to change in time before your diaper leaks wouldn't be so fun.
If you want to wear diapers and wet them then just wet the diaper instead of using the toilet. But don't harm yourself into making yourself incontinent and lose bladder control.