I dont know why people are so singular minded, if dollars can be saved and also used, spent and earnt all at the same time.   Why would anyone describe BTC as too precious to use, keep some back if you like but its supposed to be spent.       I use BTC when its available instead of cash, think of it as supporting the company you buy from because it should be lower cost then credit cards.   So you are giving profit to companies which have taken the bother to use BTC and you have avoided VISA and ultimately the whole big bank leveraged up house of cards which is going to collapse one day, sooner we start on alternatives the better