Many true Bitcoin enthusiasts actually prefer to use Bitcoin as a medium of exchange. They arent interested in investment or speculation or trying to sell at a profit.
Instead, they see Bitcoin as a way to engage in free association of trade without the need for governments to regulate the exchange. With Bitcoin, its possible to pay for goods and services instantly by transferring the digital money straight from your wallet to someone elses digital wallet.
Bitcoin would be a good medium of exchange if it was more popular among laymen and if the price was more stable but nevertheless, it's a very good idea to use it as a medium of exchange as the price rates make it profitable for both the dealer and buyer in the market.
Bitcoin is a good medium of bitcoin in terms of exchange, because all transaction using this coin might be easier and more faster. I'm looking forward that in the future this coin will become more successful in exchanges, together with the remittances.
In additional I believe that more people were attract to invest in this coin because more users are using exchange.