How so? And if this is an actual, real problem...then stop printing them? What's the point of making currency that normal citizens have issues using?

I just don't undestand it on some fundamental level. Where I'm from(Poland)_200PLN(about £40) notes are very common in circulation, and if you were to pay for a 5PLN loaf of bread with a 200PLN banknote I can guarantee literally no one would bat an eyelid. It's a common and completely normal banknote to use.

Yet in UK, where people make more money on average and also buy more expensive things, the £50 is some alien piece of paper that most Brits have never even seen. The only other place which treats its own currency with such disdain is Germany where I saw signs on petrol stations sayng they don't accept 500 Euro notes. Well if you don't, then why even have them? What's the point? The government should be going after all retailers who don't accept any official currency, because that seems like the very basis of working currency system.