Re: bitcoin priced in real goods

When will we stop pricing bitcoin in dollars, and start pricing bitcoin in real goods, ie loaves of bread or big macs?

You will never see anything priced in terms of one specific good. As mentioned above, both of these items are priced in terms of their own local currency so if you did price bitcoin in terms of a loaf of bread, you might as well be pricing it in terms of dollars.

What could potentially happen is to have some kind of index that measures bitcoin's purchasing power (in a similar way that the CPI measures the dollars purchasing power).

Yes, but that would again be country specific. We would need something universal.....

Goods will always cost different prices in different countries as demand for goods are different from country to country and as a result goods are produced more/less in countries that specific goods have more/less demand. Also labor costs will be different which will have an effect on locally produced goods.

TL;DR the cost of the same good is going to cost different amounts in different places even if the same currency is used.