Based upon the responses that I've seen in this thread and many others on this site over the years, it seems like the argument really isn't "cash or cashless" because we never hear anyone who is in favor of cash say, "I just love carrying heavy bags of coins and stacks of bills around". Instead, their main bias towards cash always points towards a desire for privacy as it relates to government oversight, intervention and taxation.
Privacy is one of the primary reasons that cryptocurrencies were created and continue to be developed and refined on a daily basis. Some are more private than others for sure.
Whether its paper cash, metal coins, paper checks, electronic bank payments, cryptocurrencies, etc., they all are really the same thing, which are tokens representing the value of a certain amount of an agreed-upon currency, which for the sake of argument, is most often the U.S. Dollar.
All of the tokens mentioned above have their advantages and disadvantages, but I think the writing on the wall is clear moving forward. Just like we created pure digital versions of documents, photos, news, videos, education, and music, there's no doubt that we are moving towards the pure digitization of money.
So moving forward, the question won't be cash vs. cashless because cash is clearly on the way out with each passing day. The question will be "which digital token or payment method best represents my preferences"? For some whose preferences are speed and underlying price stability while still using the traditional banking system, that might be a service like existing Credit/Debit card payments, Venmo, Paypal, Zelle, Cash App, or even a stablecoin like USDC (once they are regulated, which they will be soon).
For those that want to keep the banking system out of it for the most part, their choice may be a fast peer-to-peer transfer using a cryptocurrency such Bitcoin (over the lighting network), Litecoin, ETH, SOL, etc.
For those that are privacy-focused, their choice will be something like Monero, Zcash, etc.
And it goes without saying that all the new token transfers will take place via Phones, Tablets, computers, in-person merchant terminals, etc.