how can you convince someone who is of a total Zero knowledge to Bitcoin that the Bitcoin is an existing and legitimate currency when they can't feel it out touch it with their hands other that having it imaginarily in mind that it is a digital and technological currency known as the Cryptocurrency?
Pretty hard and to be honest you won't be successful in most of the cases.
First, it's been 15 years, somebody who doesn't know about Bitcoin now is somebody would is definitely not interested in it, convincing someone of the things that stuff he doesn't care about is good at is really a herculean task, which will end with a yeah, got it, thanks, bye!
Or should I put it this way like this scientist would say that ... What you can't see, touch or feels doesn't exist just like the ghosts, souls and the physical body being of humans and all that livings.
Nope, way simpler! Credit cards or debit cards!
Both are digital, numbers on the screen, you type your cc number you type a bitcoin address, you never touch real banknotes, and so on!
No need to go into the spiritual world!