For the stores. You know, they may see an advantage in stripping their customers naked too. Less problems with hidden weapons. Less problems with hidden goods.
You won't deal with suspicious persons too. Online auctions do give you ratings, usually.
You are not a small store. You aren't a business providing crucial services to private persons.
You (the lawmakers) probably shouldn't force these to accept all kinds of strange things. But the national currency is a must.
The point is, when somebody - anybody! - won't be able to pay for his bread, his cola and beer, his bus and so on honestly by his cash - the nation have to be humaneatarian (c) Terry Pratchett if it isn't considered deep shi... a vital problem. Some people may die from it, you know. Not everyone, not in any remote place and in any weather would be able to deal with the problem safely...
https://disqus.com/home/channel/disqusunderground/discussion/channel-disqusunderground/protecting_the_unbanked_by_banning_cashless_businesses_in_philadelphia/#comment-4372121544