Lack of adaption is the biggest problem for bitcoins. There are ways to make it usable everywhere. Like foldapp, there must be apps for all kind of people to use it for the day-to-day means of activities like retail purchase, offering to home less people and many others. This is the basic thing everyone spends money, If you enable basic spendings of everyone via your app to adapt bitcoin, easy to go.
There is no consensus of what bitcoin should be. A store or value like gold, or more like cash for every day transactions.
I personally think it is ridiculues to assume and want bitcoin to be use for everyday purchases. Do you really want every single purchase of coffee, baby nappies, newspapers, groceries be recorded in ALL nodes all over the world? This seems as a massive waste of processing power of miners all over the world competing to confirm ppl coffee purchase from every single coffee shop on the planet.