Physical cards and cash are much more robust than a phone…
I mean for starters, you don’t have to worry about charging your credit cards for them to work…or finishing up a long day of skiing only to find your credit card battery got killed in the cold…
While I don’t carry nearly as much cash or as many cards as I used too, it feels irresponsible to let yourself be completely dependent on your phone.
Fair enough. From my perspective, it feels irresponsible to allow my phone battery to die.
I don't ski, so there's that, but my phone is such an important tool, for both work and my personal life, that I have literally never allowed it to die (that's not hyperbole). I charge it each night, and every time I get in my car – even with heavy use, the battery has never gone below about 10-15%.
I recently got a cellular Apple Watch, so that's another layer of coverage which allows me access to my cards.
My physical wallet is in my car. In the unlikely event that my phone and watch both die or are stolen, and I have my car, I can access my cards there. Further, even if my car is stolen along with my phone and watch, I can always call my wife or other family member to assist (I have a few key phone numbers memorized).
So, I take your point about being dependent on a phone, but I have a different approach which works for me.