Yesterday I posted an item on craigslist and...behold! there was a check box for if i accept cryptocurrency. Of course I clicked yes! along with this experience i have also payed a graphic designer who accepted litecoin. he had known about crypto and wanted to get involved so he was happy to accept.... all i had to do was show him how to set up a wallet.
I think this relationship with bartering goods or services with others is really a good starting place for crypto spending. i believe in the US, income received in the form of crypto and cashed out is considered ordinary income tax. always do your own research but usage is starting to ramp up little by little.