Yes. They self-identify with the brand and make it part of their identity. Or they inherent it from their families. My family is a Toyota family, for example. I broke ranks and got a Honda, an this was viewed as a 'betrayal', much in the same way left handedness was viewed as 'wrong'.

Yeah, sexuality is a choice. Part of that choice is to conform with social expectations, regardless of if you are gay, bi, or whatever. You very much can change your sexuality. People do it all the time. It's not some inherent immutable trait you are born with that persists forever. and people around you in our society get to agree or disagree with you. For example, I am straight, but plenty of women I have dated think I am gay because of my non-conformity with 'straight' male behaviors. Further, other points in my life, my lack of gayness was also used to mock, deride, and harass me because I was 'too straight'. So which one is it, am I gay, or am I straight?

Was I needless forced to struggle in my life because my parents were poor ignorant people, vs if they had been well-off and educated? According to some folks I've met, I should have never been born because only 'good' people should have children. By your style of thought, indeed, I should not exist, because if I had not been born to my parents, I'd have never had to struggle!

The only way for any of us to not 'needlessly struggle' is indeed, for us to not to have been born. Do you have kids? I have nephews, they had pretty open-minded and liberal parents. They are now young adults. Do you know what their complaint is? That their parents didn't oppress them enough, because if they had, they could have been so much more. They think their parents should have pushed them harder and beaten them into more social conformity so they could be more 'successful' in life and be popular and be cool, unlike being only average.