You might remember being a kid and going to get yourself an ice cream. Your mom or dad gave you (in my case 1€) to go and get a scoop. Maybe sometimes two. We would say hello and pick our favourite ice cream, then pay by giving the ice cream parlour a coin. What if in the future, it would be a Bitcoin or better said 0,00000000 and who know how many 0's 1 Bitcoin. Would the parents pay for the child via a QR code or would the kid have his / her own phone? Maybe they would use hardware wallets. Who knows. 

These are my first thoughts. Now I must go to bed and dream about my Dogecoin.