What is sapiosexuality, and why is it so controversial?

If you appreciate intelligence in a partner, congratulations: you’re like the majority of the people on this planet! You aren’t quite a sapiosexual yet, however.
Sapiosexuals are described as people who are physically, emotionally, romantically, and relationally attracted by intelligence. They find intelligence to be the most important and erotic trait, and value it more than a potential partner's physical appearance, status, emotional connection, and even personality.
But is it really a sexual orientation? And why does it garner so much criticism online? Click through to learn about this controversial sexual identifier.
What is sapiosexuality and why is it so controversial?