It's not a choice, no one can choose which gender they are attracted to- but I know what you mean
I grew up with very similar parents, they taught me the same things due to being Christian. Thing is, reproduction is not a given when it comes to love. If God wanted love to be all about the ability to have kids, then everyone would be able to, and not everyone can (or wants to). All this teaching does is diminish love down to having kids. Which is incredibly sad because there is so much more to love, and so much more to marriage. Besides, gay couples can have kids this day and age, there are options
The fact of the matter is that this homophobic teaching doesn't originate with the Bible. The word homosexual wasn't even in the original texts. Rather, the verses which speak of "gay acts" are referring to a specific pagan practice of that specific time and surrounding culture. Unfortunately a lot of Christians who hate the lgbt+ community have adopted teachings which twist these verses, to shun them. And many well meaning individuals inside the church have then accepted these teachings, like my parents did, and like yours seemed to do
From what you're saying, it sounds like you could be bisexual or pansexual, perhaps even abro, like me (which is where your preference changes over time, usually going full circle lol)
But regardless, don't feel the pressure to label yourself until that label fits comfortably.
you're welcome to hang out in our little corner of the forum