>You are not going to find 1 or 2 eurocents anymore either
You may want to tell that to my wallet, as well as the payments I make with them. There's a cool 37 billion coins outside in the wild, so you're going to find them rather easily throughout Europe, even if your own country has stopped using them.
Technically, you can use them for payment, they are still valid money; but the price will be rounded to 5 cents when paying in cash and you won't get them in the other direction.
The 1 and 2 eurocent coins are still legal tender in the Netherlands, stores just have the option not to accept them and are allowed to round prices to avoid having to stock them (if communicated beforehand).
It's been years since I last saw a eurocent coin, but it's been eliminated by permitting businesses to remove the need for them, not because they're being phased out.
So rounding for cash is a different problem that rounding money in general.