Why is 2 Channel better than multi-channel?


I hear that the music fidelity of a multi-channel AV Receiver/Integrated amp can never match the sounds produced by a 2 channel system. Can someone clearly explain why this is so?

I'm planning to upgrade my HT system to try and achieve the best of both worlds, I currently have a 3 channel amp driving my SL, SR, C and a 2 channel amp driving my L and R.
I have a Denon 3801 acting as my pre. Is there any Pre/Proc out there that can merge both worlds with out breaking my bank? Looking for recommendations on what my next logical steps should be? Thanks in advance.
springowl
Even if you had a string quartet playing in a small room, you would not put one musician in each corner of the room. The "stage" approach emulates "being in the band", not a small ensemble performing in a small room.

Just for kicks I played my "one instrument per channel" LA Guitar Quartet SACD yesterday, and I must say I much prefer "audience" mixes (i.e. instruments/vocals from the front, ambience cues from the surrounds). Thenagain, I never played in an orchestra so may be "stage" mixes just needs to grow on you.
Edorr... If you locate your speakers as recommended the "surround" speakers are to the sides. not in the rear corners. This would be quite a reasonable set up for live musicians.

I think we still have the right to play music any way we prefer, although the Obama administration may issue a regulation about this.
Living in the deep South I am more concerned about local politicians banning music on Sunday altogether, than any Obama regulation, but thenagain we probably have different political affiliations.
Blaming Obama is a quick and easy way to demonstrate that you listen to AM radio and late night comedians. Why you would want that known I cannot imagine.

As for multi-channel, sound effect laden, gimmick strewn reproduction, why not? It's as valid as any other form of self-deception. And isn't hi-end audio all about self-deception? Aren't we trying to close our eyes and be there or bring the performers euphemistically "into our listening space? What difference does it make how we go about deluding ourselves as long as we satisfy the delusion.

All of you have my express permission to utilize any form of self-delusion you enjoy, no matter how many speakers that requires. Enjoy it while you still can. Wall Street isn't done with us yet.
My tuner is FM only and I go to bed at 9:00 P.M. so I can't help you out.

Someone put you up to snide asides about your President. I was just guessing who it might have been that so inspired you.

I think Obama likes music more than any President in recent memory.
Bush and company went after The Dixie Chicks for simply disagreeing with a stupid decision in public. Freedom of speech?