They read lots of recording industry marketing material. . .
Obviously, if you've got an unlimited budget you could get the kind of gear that you could get an amazing sound with ease (it's a lot less effort with better gear), but it's surprising what you can do with what you have. Hell, I've even been in situations where I had access to some top quality gear and in order to get a certain sound, I'd throw something cheap in on a track because the high end gear was too clean and lacked the proper aggression (i.e. the uncontroversial, almost cliche technique of people using guitar effects pedals to affect the signal even in an expensive pro studio in order to get the right edge). Instead of people always saying "I'll make better recordings when I get better gear" they should just record and hone their ears. . . because their EARS are what really are going to get them a better sound. If they have good ears, they can make even modest setups sounds decent (within reason).
Some amazing albums that still have staying power today were recorded under less than ideal conditions. I'm not knocking high end gear (I'm pretty sure we all pine for that) but there's no reason you can't work with what you've got if you're able to make it sound good and appropriate for the music you're trying to make. There is no correct way to please the listener, unless a bunch of audio geeks like us are the target market for the music you're making. If you can afford it, it's great, but you don't NEED it to make quality recordings as long as you understand the fundamental rules and hone your ears.
Trying to get a good sound of a drum kit from a single sm57, even if you have a huge studio, is a perfectly valid sonic experiment. The OP did a fine job accomplishing that, so I think he's proven my point.
Audio snobs For The Lose.