Whatever you plan to buy offline using Bitcoin you need to swap the Bitcoin into Fiat, there is no car dealers in my country that accepts Bitcoin, there are no house sellers that accept Bitcoin either, unless I swap bitcoin into Fiat, I think Bitcoin hasn't really get to that level of general acceptance throughout the world, it's going to take a much longer time to see this happen.
Except that in his country, he can accept payments in bitcoin so he can immediately use his bitcoin to buy something he wants. But I guess if he doesn't have a lot of bitcoins, it's not worth it to buy something with bitcoins and instead keep the bitcoins to sell at a high price later. It will be much more profitable because he can get a big profit and then buy it with the profit from selling his bitcoins. He can also save the profit money for other things to buy bitcoin again when the price is corrected or save the money for the future.