Joe and Jane and Ethereum

So I don‘t know if it will be considered a useful post here. But I would like to raise again the question of: what will the use cases for crypto currencies or blockchains like Ethereum be? And I thought it might be interesting to ask it in a specific way:

In what way do you think, Joe and Jane from Marshfield, Wisconsin, will use Ethereum in 5 or 10 years? Let’s say they are now in their mid-40s, he is a carpenter - she works in a bakery. Like, normal people - no high salaries, no IT or financial background.

Will they have anything to do with Ethereum in their daily lives and if so on what level?