Print money will likely almost never become a thing of the past, at least not till we reach a point where absolutely everyone is connected on an almost completely reliable network that experiences no downtime. That, and you also have to consider the issues that could be presented by a power grid outage, especially when one considers the extreme vulnerabilities that national power grids have. Tons of grids are networked together and the infrastructure that maintains them is not the greatest. If those go down for whatever reason (solar storm being the chief potential issue), then everything gets scuffed. There will always be a need and use for paper money, there will never be a true replacement for those pay methods in the digital age.
That and some people just like not having a record of where they spend their money. I personally don't care too much about it, but to each their own.
From a country that is becoming accustomed to physical money scarcity (ie. cashless by force, not by choice) i can tell you that it actually IS possible, but you lose flexibility and have to learn new things, such as planning in advance how much "money" are you going to use that day before moving away to some place without connectivity.
In our case, its the very old debit card system and a network of (stupidly dial up) pads to validate transactions at hopping 1200bps (quite retro indeed). Funny thing is some people actually found how to make the things work over WAN, but its kept very low profile as the banks are intentionally using dial up to "slow down" the transactions...
Get into a socialist central planned economy, and you will learn even weirder things...
Completely reliable network? NO downtimes? LOL. Get used to: Today we won't be able to buy food here, or, "there is no system/electricity/internet". But your physical money (if you have any left) won't be enough to buy a candy...
Actually i have been to "developed" (capitalist) countries and connectivity was nearly 100%, at least in places with other humans...
"Solar storm" could be compared to, that month (March 2019) where we spent many days without continuous electricity. Its survivable, been there, done that. We even experienced some strange phenomenon reminiscent of the past, such as the neighbors coming out to socialize with others during daylight kids playing with others away from any digital gadgets, etc. The nights were scary tough, especially in the less safe areas.