Isn't everyone pretty much using "digital currency" now? My bank account is numbers on my computer screen. My paycheck is directly deposited. I buy things by swiping my credit card, or entering the numbers into Amazon ... I rarely see paper money anymore.
Yep. Actually, same thoughts here. Upon reading the title, many of us are actually using digital currency already. If you can see it on the screen, I think that's already digital, right? 
But anyway, I know your talking about crypto here. So on my end, we don't really have to convince them. As I've said, many of us are already using digital currency. Sooner or later, they'll discover crypto as well. Speaking of digital, we're now gearing towards a more digitalized age. So let's just be patient, let's just do our thing and before we know it, those people who don't know crypto before will surely utilize it in the future.