I've been into diapers for about 5-ish years now, and I've worn them on and off as I thought I could get away with it. I'd experiment with different brands, activities, etc, but I never found myself actually desiring the more, for lack of a better term, "childish" side of the ABDL lifestyle. I'm curious, yes, but there's not a real need, unlike with diapers. It's like wanting to try a new drink flavor or something, rather than the actual concept of being thirsty. I like diapers, but I also like my sapience and cognition. I don't want to be a baby; I want to be me, wearing diapers. Does this make sense?
Another way of explaining it. I think what makes diapers interesting to me is the taboo, yet "safe" aspects of it. Part of the thrill is the fear of getting caught. But while I might be able to explain away diapers with bedwetting or a practical joke, I'm not sure I could explain pacifiers, bottles, clothing, etc. In addition to this, I like diapers because of the physical aspects of it, i.e. comfort, padding, clean smell, etc.
I dunno, just trying to organize my thoughts. I'll delete the thread if it's unwanted or unneeded, but perhaps you guys could help, since you're kind of experts on this stuff?
And, of course, no offense intended to anybody who /is/ attracted to those other aspects.