It is OK to wear diapers 24 hours a day as long as you change often enough and shower often as well.
Keeping yourself clean by changing the diaper when it's full or every 3 to 4 hours or so and wiping with baby wipes and showering to stay clean can help prevent diaper rash.
Some people wear diapers 24 hours a day for fun and others wear diapers 24 hours a day for need.
Just like toddlers and babies who wear diapers as they are not potty trained they wear diapers 24 hours a day and are fine as they are changed often and are wiped and bathed when needed.
If it's fine and okay to wear diapers 24 hours a day for toddlers and babies then it's also okay for adults, teens and kids, including older kids to wear diapers 24 hours a day as well.
Diapers are very convenient as well as you don't need to use the toilet and can just pee and poop the diaper whenever and wherever you are.
No need to stop what you're doing to run to a toilet or hopefully find a toilet as the diaper is your toilet.
I don't wear diapers 24 hours a day right now as I cannot afford it but I will soon and I will enjoy every minute of it.