Mistress Ayn, I completely agree with you about the unfortunate current obsession with labeling one's sexuality. I roll my eyes whenever I read a belabored discussion of the alleged difference between bisexual and pansexual.

There is one more perspective on this topic that needs to be mentioned. One common argument one hears from the AntiPorn crusaders is that habitual use of it causes the viewer to escalate to more and more depraved stuff. Really terrible unspeakably vile stuff like <drum roll>

BDSM!!!!

Gasp!

Actually like most good propaganda there is a small grain of truth here and so is another argument against the notion of an orientation.