Before I bought the game I planned on never using the AH and didn't think it'd ever be necessary to do so. Having just gotten to inferno with my barbarian, I've still not bought anything off there, but sold some items to have a decent amount of gold.
I believe the item-dropping in the game has been designed with the AH in mind, so I'd expect to see lots more shite drops than I would otherwise. This factor is making me seriously reconsider. I'm going to play inferno for a while first to see how things progress and whether or not I could maybe grind away at searching for items for lots of hours. If it reaches a point where I feel I've spent sooo much time and received bollocks in return, I might just give in and use the AH. And for me, that effectively kills half the fun in the gameHopefully item-hunting doesn't go that badly!
So, do you use the auction house to buy gear? And what are your thoughts on this?