Asexuality. While some of us might not be able to fully understand what it's like never feeling sexual attraction at all, there are at least 72.8 million people in the world who do.
Watch more: Why Some People Never Want To Have Sex
But statistics aren't as powerful as hearing actual individuals discuss what it's like to be asexual. Just sit back for 4 minutes and hear them describe it in their own words.
Video via Fusion