I never said that it wasn't normal. All I said was that you didn't come out that way. You could decide, after birth that you choose to be gay, but it's not something that you come out with.
How can I make any choice without a genetic base?
I simply make the choice.
Choosing McDonald's fries over Sonic's fries is a choice, choosing Pizza Hut over Domino's is a choice, choosing to debate this with you and not read fanfiction is a choice. All of those are simple choices, that don't require genetic bases, as both of my parents, and grandparents, either can't eat fries, or they prefer to not eat them. My family is a family of vegetarians, excluding myself, my sister, and three of my cousins, and I only eat peperoni pizza. No one in my parents generation even knows what fanfiction is. And that can not be put into the genetic base, as it is not something that your body consumes but something that your brain desires.
Am I explaining myself well enough?