"Bisexuality is superior to heterosexuality?"?

Let's rephrase this in terms of another matter of mere personal preference: "Neapolitan ice cream is superior to strawberry ice cream". Unless you're severely allergic to chocolate, or vanilla reminds you of the time your grandmother beat you with a wooden spoon for no apparent reason... then maybe neapolitan might not be so "superior". Anyway, yes, it's grand to be bi, and while we're at it - what of all the intersexed people? What about their gender? isn't anatomical gender, much like sexual orientation, more of a spectrum than an on/off switch too?