I just made a similar post to a different thread, and after re-reading it I thought it would make a nice start for a discussion.
I discovered years ago that there is a inverse connection between my capacity to self-care and my desire to wear diapers. In the simplest terms my need for diapers goes up when my needs for intimacy aren't being met.
What I don't mean is something like this: "if I don't get enough sex then I wear diapers." No, it's more about not spending enough time taking care of myself at many levels, such as talking about feelings with close friends, spending relaxing time with friends enjoying and sharing artistic activities, "self-caring" by journaling or going for long walks etc.
The typical time when I find myself wearing diapers for long periods of time is when I run from meeting to meeting, work a lot before and after spending time with family, travel a lot for work and in the end don't have time to spend with friends, myself and my well-being. In other words when I don't find the time to externalize and verbalize my emotional experience, that's when my desire for diapers is strongest.
It's a simplification, but I wanted to get your reaction.