WARNING:
BEFORE READING THIS, I HIGHLY SUGGEST YOU DON'T TAKE THIS PERSONALLY.
Answer:
- Some humans tend to think that it is actually "love" they feel towards another human regardless of their gender, thus resulting in the making of the concept of gay.
- Most humans never use protection despite knowing that one of them has HIV or STDs.
- They thought that not being attracted to anyone is another orientation. They called it "asexuality".
