I already sold all my Ethereum for Steem... a whopping $80US worth. To me, it's more like silver and gold, just more liquid. I am more interested in using Ethereum as a currency because the transactions were very fast and the fee was tiny. But why limit myself to just one coin? If I had a store, I would most definitely accept cryptocurrencies. In fact, I have a plan to help someone close to me re-start her consignment store and not just accept crypto coins, but also pay consignees with crypto and encourage them to use it everywhere that accepts it.