C'mon Sheridan, don't you know? The first stage of a two stage trigger is like foreplay!!!
They make both because different guys like different things. I like 2 stage triggers even for hunting because I like to settle in, get some pressure on the trigger as I get my target under the wire in my scope, then build up to the break as my crosshairs find home where I want to send it. Then again, I shoot all of my weapons with the same mentality whether it's chasing paper or a coyote. With a 2 stage, I can warm up to a shot by taking the slack out of the first stage, but if I don't get the exact placement or position I want, I can let off. It's a bit irrational, but I always feel like I need to reset my trigger if I built any pressure against a single stage trigger and didn't break the shot.
I do prefer a nice light, CRISP single stage for 3gun or other speed shooting (and would prefer one if I were in a battlefield scenario with a semiauto) because of the shorter and faster trigger reset. Long travel is long travel in both directions. I know the Bushmaster trigger will reset the 2nd stage without reseting the 1st, but that's not 100% true of all designs (not sure I've ever tried it with a RRA or Geis).
The good news about that is that almost all of the good AR triggers are available in both single stage and two stage. Geissele makes both, JP makes both, RRA makes both, Bushmaster, Timney, etc (although Timney might not make a 2 stage anymore?).
Granted, a spring kit or sending off to Bill Springfield won't convert a single stage "mil-spec" heavy & gritty trigger to a 2 stage precision hunting trigger, but if you like single stage, Bill's work or a spring kit are very affordable options.