Fenixp: So... You're trying to say that Blizzard would be removing auction house if only minority would be against it? I don't think they're idiots, you know.
As for how it ruins the gameplay experience - well, the higher difficulties were quite obviously designed with a lot of grind in mind, far more than that in previous Diablo games. Can't really prove anything, but to me, that stinks of Blizzard trying to force you down the AH road - of course, all of this is second-hand information, but I would be really, really surprised if AH didn't reflect into gameplay in any way. Now that Blizzard is removing AH, they can remove ways it has reflected on gameplay as well, turning it into a more enjoyable experience for everybody.
Then there's the other point - where there was actual money at stake, Blizzard had to protect the game a lot more, which is, I believe, one of the main reasons for the always-online DRM. Now that it's gone, there's no need for such a strong grip over what players can or cannot do - so now we can actually hope for an offline patch.
Before you try throwing 'unconfirmed' and 'not objective' at me in any way - I base my purchases on opinions I have formed. If some of my trusted friends tell me that features of the game they feel are based on the inclusion of AH are actively hurting their game, I am going to take their word on it over that of Blizzard.
Nobody ever asked me, you know? I don't understand how you can throw around terms like "majority" when the playerbase has never even been asked anything concerning this matter. Sure, I see people bitch on the forums, but this is not an indication of numbers to any degree. In fact, the sheer number of people using the auction house is a testament to its popularity.
No offence, but your view on gameplay balance is bullshit. Diablo 3 endgame is as hard as Diablo 2 endgame, with the exception that Diablo 3 has infinitely better drop rates for gear that is actually useful. And gameplay is significantly easier.
I know that the consensus on this forum appears to be that Blizzard introduced the RMAH so that they could profit from the transactions. Maybe. Maybe not. Does not matter, because it is speculation. But buying items for real money has been around since, what, the inception of ebay? Gold buying was rampant in Diablo 2 and it will once again become rampant in Diablo 3. The only difference is that there is no more vetted environment for doing it, once again opening the market to scammers and all the bullshit that was always tied to it.
As for the gold AH, trading has always been around and it will still be around after the AH is closed. Once again, it will be driven to the forums, just like in the days of Diablo 2 (and all the bullshit that was attached to it). The auction house was fantastic because it allowed for the establishment of a common currency - gold. Once the AH closes, gold will lose its value just like in Diablo 2, and the community will once again have to establish its own currency, such as runes and forum gold in Diablo 2.
So, at least concerning gameplay, shutting down the AH does not address any of your concerns and it will not have any effect other than, once again, leaving to community to self-regulate trading.