It's always tragic whenever a parent's anti-gayness strains or destroys their relationship with their children.
It adversely affects their children even when their kids are straight. They look down on relationships their children have with members of the LGBT community, and the pressures that go along with that spell trouble for an individual's emotional and mental development.
Something that teacher Michael Neri addressed when one of his student's parents texted him and let him know that they were pulling their kid from his class. The reason? Because the teacher is gay.