You must have noticed as well that some merchants will hesitate to accept card payments for a soda drink or cigarettes. The cost of the transaction fees may significantly cut into or even exceed the profit margin on such low-cost items.
In my place, they do hate it when you're asking to pay with card for anything lower than 5€. They'll find an excuse that their POS is broken, and accept only cash for the moment.
There is a legislation that says
card payments up to €10 should only charge 0,5% fees.
Some banks have already implemented it.
For example, one coffee that costs €2,00 is only going to pay €0,01 fee. Is that a lot?
As a merchant in a competitive economy (tons of take-away cafeterias) is it worth losing a potential income of €1,99, just because you're greedy and you want €2,00?
Many tourists prefer using cards (especially Revolut for zero exchange rate fees), so you're going to lose lots of money if you don't accept POS payments.
So even if the government hadn't imposed POS payments, it makes sense to accept them voluntarily.
0,5% loss is nothing if you take into account that BTC can easily go +5% in a single day. Of course it can also go -5%, but long-term wise we all know it can go a lot higher than that.
So if you're smart enough (spoiler alert: most people/merchants aren't), it totally makes sense to convert your fiat income into BTC on a daily basis.
Cards aren't the real danger, CBDC is for reasons that I have explained many times before, so I won't repeat myself.
Try this experiment next time after wanting to buy something:
- Hello sir/madame, do you accept Bitcoin?
- No, I don't.
- Oh, too bad, I'll pay with a card then!
There is a small chance (1-2%) that they may ask you what Bitcoin is and how they could potentially accept it in their shop...
You may even attract their interest even more if you tell them that Bitcoin charges zero fees for the recipient (merchant), only the client pays fees (could be zero with LN).

That's just a simple way to spread the orange pill with minimal effort.

(bonus: small talk hones your social skills)