I would accept cryptocurrencies as a form of payment for my services (I work in IT). If a plumber (that I actually need today, my sink is blocked) would feel the same I don;t have to change anything to dollars/euro. I can just send him STEEM dollars (in 3 seconds, no fee). But I'm realistic enough to see this will be a while.
There are more use cases for blockchain technology than just currencies, you have smart contracts and Steemit (social media)for instance. All decentralized. No third party. It's so awsome.