That's just a reaction brought from many many years of evolution and not so many years of media exposure. Anything new is strange, it's a healthy trait to evolve, although understanding will lead us to better places.
*looks at the strange confucious stuff he just typed* hmmm need beer now.
I had a load of questions about it, but just read the overview and really it all seems to make sense, apart from the asexual people having partnerships with sexual people, I like many people (I'm guessing) have a rather strong desire to have sex with people, I'd just not be able to be in a relationship without sex.