Except I have yet to meet a single person from my culture be LGBTQ. As far as Europeans/Asians that's been part of their culture for thousands of years and there's nothing wrong with that.

Some of my closest friends are lesbians, and one ftm trans

What? I'm assuming your upbringing is different from the culture you're a part of now. You are in a culture that is accepting of non-heteronormative things and you don't even realize it. Please examine what this means to you and why you hold the beliefs that you hold, and try to understand why they're important to you. Also, check to see if they're benificial or better left in the past. Your culture is a choice. It's not some intrinsic unchanging thing.