I'm straight, a traditionalist, married for over two decades and raised two wonderful children.  In that time, I never saw a single negative effect on my family as a result of LGBTQ equal rights movement, legalization of gay marriage, etc.  Nada, zero, zippo.  I have witnessed fewer Matthew Shepards' strapped to fence posts and tortured to death.  So how exactly is this a family's "worst enemy"?

Have some humility and show respect for other's views. Your beliefs are just that, your beliefs.   You don't have to agree, but listen with compassion instead of spouting dogma.

"Thou hypocrite, first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother's eye."
— Matthew 7:1-5 KJV