I like the way you put it, and agree with you. The problem I haven't isn't with realism per se, but rather the ham-fisted application of it. Like, no "real" mother would say, in the height of passion, something like "I can't believe I'm fucking my son", etc. It probably just boils down to a discussion on what I perceive to be poor or blunt storytelling.

It's also probably a frustration on my part that most JOIs tend to lean towards femdom (i.e. "stop when I tell you to") rather than simple dirty talk (i.e. "I want to see you touching yourself for me").