I think that this really helped Dad in accepting us.
Why would anyone in their right mind deliberately choose to be a part of perhaps the world's most loathed minority? To be a part of a tiny group of people who are demonized by people of nearly all religious and cultural backgrounds. Being queer is like playing the game of life on Hard Mode.
Meanwhile, the claim that we're recruited or seduced into being gay is ridiculous. Advertising, recruitment, and pressure for heterosexuality is everywhere. Weddings, TV commercials, programs, movies, all popular music - it all pushes and glorifies heterosexual love. Only very recently did we begin to see representations of queer individuals in a non-condemning, non-derogatory manner - and most of those representations are still of the "harmless neutered sidekick" variety.
The "it's a choice" shit is a joke.