...compared to say u.s. dollar bills which you can hold in your hand or stuff in your mattress.
this is why bitcoins will not go mainstream because majority of human beings on this planet do not have access to a computer.
successful gold standards are things like toyota trucks, ak-47's, u.s. c-notes which thrive in places like afghanistan and africa.
Yes, this probably the main reason that why Bitcoin can never have large scale adoption. There is still a huge amount of population who are completely undigitalized and they will never know how to use it. Especially the people living in underdeveloped countries are illiterate. Some are not even aware of the English language, computer, smart phones, etc. They will never be able to use it. But if we really think practically there was a time when people didn't even know properly about fiat and money but now they are well aware about everything so this digital change too can come anytime if we begin to move towards mass adoption.