Im not the first to say this but I´ll say it anyways: Inferno is not supposed to be easy, you should not be able to just breeze through it as you do with the rest of the game.
The auction house is there as a shortcut for the people that are not willing to put the time and effort.
Do not get me wrong, real money transactions on a retail product are disgusting IMO, but you can skip all that stuff (just be prepared to be stuck farming for a long time).
The issue that seems to be the most aggravating is that Blizzard is actively pushing people towards the RMAH. I almost exclusively play solo, and never intended to use the AH, but with the drop rates of higher level items being nerfed so significantly, (12% less chance for iLvl 63 items I believe) and the increasingly prohibitive repair costs that come with farming, I've found myself between a rock and a hard place. A single-player ARPG should not be balanced like an MMO, and the RMAH introduces the fear of ulterior motives with every balance patch.