That’s because out of everything, we’re kind of creatures of conformation. Every nail that sticks out gets hammered down. It’s a part of our biology at this point, given how tribal in nature we have become. Success came from everyone working together, and when something goes against the status-quo, it’s normal for people to shun it. You’ll find this in literally every possible ‘division’ you can create for society. Dyed your hair blue? Some people’s instinct will naturally kick in and shun you for it. You don’t even have to be gay or anything - just out of the ordinary.