So let's see, in your idiotic scenario where cash is such a motherfucking hassle and for whatever reason you were too stupid to originally consider a personal check since that's apparently a better option for this hypothetical seller, then what would the seller rather do? Create a Dwolla account, get verified, and basically have the money deposited directly into his back account, or go through a bunch of goddamn asinine intermediary steps with bitcoin markets to get his USD out of bitcoin?
You my friend, have just been made a fool of.
You are talking about today. And hell no, I those people wouldn't sign up and trust Dwolla just because I told them so. It's good for Dwolla that people you know are instantly trusting, the people I deal with not so much. And by the way, TradeHill *used* to have electronic funds transfer in and out functionality. What's to say they or MtGox won't have it again? Besides, dollars need not be involved at all if bitcoin is mainstream, which is when my scenario is practical. I consider bitcoins far far FAR more secure than numbers at a single web site "associated" with banks. Yes, even today I'd rather have enough funds in bitcoin to buy a house than several hundred grand at Dwolla.
Your "thesis" is long term. Long term bitcoin will become mainstream barring technical flaws with implementation or regulatory hurdles. As a mainstream currency it is vastly superior to current offerings. But you go ahead and spew obscenities and nonsense.
It's not superior. This has been fleshed out numerous times, but unfortunately threads here are just as meaningless as the "currency" it's about, but let me just remind you that John Q. Public will never give a shit about bitcoins. NEVER.
It's simply another fact of bitcoin: To the other 300 million Americans and the rest of the financially advanced world that exist outside of this backwater forum, It does not make sense to use. At all. At all. At all.