I'm always happier wearing a diaper.
When not in diapers I can be in a depressed mood and less happy.
However once I get a diaper on I become less depressed immediately and feel much happier.
Lots of other people have also said that wearing diapers for them also makes them happier and it helps with their anxiety.
Diapers are even more comfortable than regular underwear and boxer shorts.
No wonder some toddlers and 3 and 4 year olds refuse to get out of diapers as they are just too comfortable.