I guess you'd consider hunting with a homemade, primitive bow downright idiotic, then.

But maybe, just maybe, there are other ways of looking at it.
It takes all kinds. Some people take the "by any means necessary" approach, anything legal to get the kill, and yeah, there's a place for that. But other people choose to hunt with less effective weapons because it's more about the experience than the kill. Some of us like getting really up close in the animal's world, giving the critter a legit chance to escape, instead of sniping it from maximum range. For some of us, that challenge is even more important than making a kill. Some people want to take the roll of a true predator (my effective range with my bows is, coincidentally, about the same range from which a mountain lion will start its charge). Some of us want the accomplishment to be more about ourselves, our skills, our immersion in the natural world, and less about high-tech equipment that tends to shield us from all that.
I'm not being snobby; I have no problem hunting with modern weapons if I need to get some meat in the freezer. And yeah, most people haven't developed the discipline and skills necessary to hunt with lesser weapons; those people should definitely stick to modern gear. But dismissing a whole class of time-tested hunting weapons as "completely stupid" is...well, I won't say it.
Like I said, it takes all kinds. It's all about understanding the limitations of one's weapon, as well as the limitations of the person operating it, and responsibly operating within those limits. Modern weapons do not grant immunity from that responsibility. I've seen much more game wounded with high-caliber rifles than I have with traditional archery. Technological excellence can lead to overconfidence. So it can go both ways.
And on the shooting range? Man, you're missing out if you've never shot the old stuff. My experience at 3d shoots is that the modern guys are shooting tighter groups and racking up higher scores. But the trad guys are having a lot more fun.