Voted Don't Know, Don't Care for 2 reasons:
- Hardwired doesn't seem to me to be any kind of scientific term. You have to use a more precise definition of what that means before one can engage in debating it.
- I'm not interested in why someone's sexual orientation is as it is, it just is. What causes heterosexuality? Dunno. It's only relevant to focus on the products of human evolution if you have an agenda for wanting to acquire that knowledge. For example, why aren't we interested in discovering why certain people have blue eyes and others green? Why doesn't anyone have orange eyes? Again, don't know, don't care.