tell them about bitcoin is ease to use.
Bitcoin is a great alternative because of the ease of use, ease of storage, security of storage,and it's also the only thing in the world you can send halfway around the world in less time than it takes to snap your fingers, and for free.
But unfortunately bitcoin is not that easy to use, besides they will probably want to exchange the bitcoins into cash sooner or later, there are systems for online business but for physical business using bitcoins is a bit more complicated.