The problem is that the whole game is geared around the AH. "Gring for good gear to make it easier to find good gear" is super-fun in theory, but when the good gear in question is just not dropping, you've got a problem. I'm sure Blizzard was entirely aware of these problems when they designed the game - crafting being really weak, useless drops, etc. - but chose to leave them that way to prompt people to use the AH.
Did you buy all the stash upgrades? Did you buy and upgrade the staff of herding? These are all great money sinks if you want to burn money. If not, I'd just try to force myself not to use the AH until Hell is cleared (since not using it makes Inferno extremely hard, I'd wager, though HGR could answer that question better than I), which is what you already seem to be doing with your DH.
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When you have nothing to say, quote yourself ~ Solfadore