I'm not the guy you replied to, but you have to carry it around, which means you need a wallet...I don't want to carry a wallet around all the time. You also have to get cash regularly to always have some on you. That is super inconvenient for me since my daily life doesn't take me anywhere near an ATM. I don't want to carry an entire weeks worth of spending half the time.
Did you ever have 2000€ in your bank account and 0.63€ in your wallet? And then it was summer and you were thirsty, so you bought something with your card instead of riding the tram to the next ATM to get a 50€ bill and ride the tram back to the kiosk, where they did not have the right exchange for the 50€ bill, which was then the reason to visit the stores around to exchange money, what they did but they looked at you very suspiciously, because that’s a common theme for a scam, and then you could finally buy your drink, but the whole ordeal cost you 45 minutes?