Clearly you aren't an on-line merchant! No chance we'd support Bitcoin if we couldn't convert to fiat and the same will go for almost everyone out there.
Cool. Free country. (Well, not really free, but we all already knew that deep down.)
If Bitcoin without fiat is only useful for buying drugs and occasional 10k pizzas, I think it's best we find that out now. No need to waste time.
I bet it's useful for more than that though. Let's see.