Huge amount of variety in this community. ABDL is a very different thing depending on the person.
Personally for me it's mostly a sexual fetish, mostly centred around the humiliation aspect. I probably can't separate the two because without the BDSM angle there's not much appeal to me. For others there is no or little sexual component at all and they could probably very easy separate the two fairly easily. Most people probably lean more in one direction or the other.
For me it's just kind of be afraid kind of being outside like cornered. Or round things kind of trigger it I don't like round things very much.
Need locks and stuff lots too. Way more physical security.