Why do we call straights 'straight'?

For the same reason that almost all languages use their word for right-handedness to mean also, direct, straight, morally correct, appropriate, lawful etc., etc. No one is as abused linguistically as the left handed: keggy fisted, south paws, gauche, sinister...The Arabs go so far as to insist on eating with their right hand and using their left to clean themselves after defecating (and of course "keggy" is cognate with Greek κακοσ (bad), Latin cacare and Spanish cagar).

The majority (by any definition) always loves to take pride in its "normality" and deride all the rest.

In the UK Bent is a slang for being gay as well as benders, I had the impression that bent came into being because a guy would bend over to receive anal sex and group of bent guys would be benders. Straight might have come from that. In the heterosexual world straight sex is considered standard missionary position so the term could have been derived from that use. Straight is much more polite than using the term breeders which is more descriptive but for some reason straight people are offended when they are called breeders. To be honest when some gay people call someone a breeder it does kind of sound like they're swearing.

Maybe someone is reading more into this than exist.

You attempt to link the use of the word straight to gay when in fact the two uses seem to have evolved separately.

As for an obsession with labeling, I note that Dr suggest a certain thing about you, yet that has nothing to do with us on here, why the need to label your self?

An interesting query. This is my hypothesis: The reason they're called "straight" is that heterosexual sex is traditional sex, while homosexual sex was for a long time considered unorthodox. In that sense, heterosexuals were the ones who "follow the straight and narrow path", an expression meaning to do that which is expected of you. Because they were following the "straight" path, they were called straight.

Hello dr D

Honestly Dr D I don't know why people are obsess with label even young kids. I don't label my self I'm a male attracted to males end of story.

its the opposite of bent, the old English euphemism for homosexuality.

It's "dYke," not "dike" -- to distinguish it from Netherland earthworks... one of those words that's fine if uttered by a lesbian but best avoided by those who aren't, for courtesy's sake.

You like etymology? Here!

Dyke is usually derogatory so don't use that word

Also it's that way because that's how it is