I think pull-ups are cute and can be fun, but I definitely love diapers more. They can hold way more and are way more babyish. There's also a much better selection available when it comes to diapers and I find the shells of diapers usually feel a lot nicer than the shells of pull-ups.
I do think it's cute how pull-ups are meant for those that are potty training but still haven't quite got the hang of it or those that are potty trained but sometimes still have accidents. And some pull-ups graphics have been super cute such as the Kion, Paw Patrol, and My Little Pony ones.
But I also think it's cute that diapers are meant for those that aren't expected to use the potty at all and it's put on knowing that at some point it'll have to be changed.
If there were a better selection of pull-ups, then maybe I'd enjoy them a bit more, but even then, I know I'll always prefer and like diapers more!