I cannot speak for every country but in the Netherlands, your banking app also serves as a 2FA instrument if you place orders with your credit card. A pop-up notification will ask you to confirm if you have indeed placed the order. While I will admit that it is possible to predict such use cases and take your phone along, it is becoming a bit difficult to predict what part of some account or service's login flow will require a confirmation with your device.
traxler|7 hours ago
vladvasiliu|6 hours ago
In my case, I often spend multiple days at my parents' house. Now, I mostly don't order online, but sometimes something comes up and in that kind of situation, most merchants will have me go through the verification.
Since this doesn't happen frequently, I'm more likely than not to not have hauled my secondary phone, especially since I very much prefer traveling light. Now, could most of those occasional purchases not have waited for my return home? Eh... most probably could've. Doesn't make it less annoying, though, for no good reason.
microtonal|7 hours ago
(Not saying that you claimed they didn't.)