Is it normal that i understand these people but not those?
I get lesbians, gays, and bis (bisexuals to a small extent), but not transgenders. I think that trans people are mentally damaged, unfortunate, and confused individuals that need help identifying with their born sex; not allowed to "change" their gender and lie to themselves for the rest of their lives.
It's simple biology: XY (you're a MALE) and XX (you're a FEMALE). No negotiation.
I'm not trolling.