I think the point was that your real-world is not the same as anyone elses real-world, and why should it be?

If you mean mainstream, well that changes, gold coin and slavery were once mainstream. Placing the current norms of one nation, or some might say failing state, as strictures on the success of bitcoins seems a little naive. The black economy is huge, even legitimate govt.s jealously vie for a share of the money that goes through it, why should bitcoin shun it?