Fear of the unknown

Why do we fear what we can't explain like we try to say what's normal and what is not normal! And who made the rules on what is called male wear and what is called female wear! And why do we throw away or kids cause they may say they are gay or bisexual or lesbian? Who made these rules and cause such a fear of theunknown or unmoral, and what makes so high and mighty that we can tell others what they can be and not be it's there life you have no right to try yo live it for them. You may not like the way they are but in the long run no mattrt how you stack it the are still your child or children and that's a fact you can't run from. But look at it this way no one ever said when I grow up I want to be a murder or a rapist or a drug dealer.these are things that just happen.