transgender - it's not a mental illness for god's sake. even if it is depression is a mental illness too, but does that give you any reason to want them to die in hell? no. in fact you shouldn't want to in the first place because you should respect people no matter who they are or what they suffer from.
gay & lesbian - "maybe we should ban straight marriage. it doesn't seem to have a high success rate" - adam levine
asexual - if they don't want to have a romantic relationship does it really matter?
bisexual - no, they are not greedy, and no, they are not gay one moment and then straight in the next. they just like both genders because they are human and aren't opinionated as long as you're a nice person.
demisexual - is it wrong they are afraid to start a relationship with someone they just met? is it wrong that they would rather love someone they already have a close relationship with? to be honest, it sounds safer than any other relationship.
genderfluid, genderqueer & non-binary - "if you got castrated you wouldn't have a ♥♥♥♥. but then wouldn't you be female? nope. you're still male." - an animation i forgot the name of. either way, they are who they are, and whether they're male, female, both, or neither, they are still human.