I'm constantly astounded by the level of ignorance many hunters can exhibit regarding guns. AR variants are "people killers," handguns are useless, and the magnum calibers are the best thing in the whole world, no matter what you're hunting.
AR variants are commonly used by other hunters due to their adaptability. You see, changing the upper on an AR will give you the same trigger pull, the same feel, and the same controls while adapting the weapon for another purpose. The typical caliber, .223, is a varmint caliber, good for coyotes and such. And it's not the best for killing people, especially if you use military ammo. You see, the military isn't allowed to use efficient hollowpoints. FMJ rounds leave clean holes straight through a person, wounding them. And really, the Supreme Court has ruled that there are protections for weapons with military purpose, not those with a "sporting purpose," so military-style weapons (though not actually as functional as their military equivalent) should be more prevalent than hunting rifles.
Handguns, of course, are great for personal protection, since they are easily carried. That's enough for me.
As for the caliber stuff, I'm sick and tired of people telling me that the best thing for hunting everything from grouse to elephants is any sort of short mag. My .30-06 works for both deer and elk, but it's just not the "in" caliber these days. I don't tell people it's the only caliber to use, though. The short mags are good rounds, but that doesn't make them the only game in town. I know it's a minor thing, but it gets really annoying. Not quite as annoying as the insistence on .300 ultramag for deer and elk. That's just unnecessary.