So, my girlfriend, who is an ABDL, and I agree on a viewpoint that seems to differ from the community at large: we do not at all like the phrases "Mommy" or "Daddy" in the context of our AB roleplay.
Simply put, we think it's creepy. She and I are sexual partners; although our ABDLism is not exclusively sexual, our roleplay is certainly marked by the presence of that element; we are primarily DLs. As such, we feel that using "Mommy/Daddy" introduces an element of an Oedipus/Electra complex that is unwanted to us. Not only that: it feels strange because, simply put, we don't want to think of our own parents! This is, of course, not to say that people who subscribe to the "Mommy/Daddy" archetypes are into their actual parents, or have Oedipus complexes; we personally just find that connection hard to shake. Instead of "mommy" or "daddy," the top during this flavor of roleplay between us is the other's babysitter: authority without a hint of incest.
I'm not condemning or criticizing other ABDLs who like these archetypes. Furthermore, I realize that not everybody's AB roleplay is in any way sexual. Please don't take this as an attack on yourself or others; I'm simply trying to initiate a conversation I don't think we've had here before.
However, what do you think? I imagine most people here will disagree, but I'd still like to hear your opinions.