Gold coins were replaced by paper money. Paper money was replaced by credit cards. Now credit cards are being replaced by smartphone wallets. My phone or watch can still pay for stuff while they're offline. For the past 5 years, I didn't carry a physical wallet. I'm doing more with less, and failing safe.

If the lock freaks out - and yeah, I'm having problems with my HomeKit stuff every now and then - I need the physical key on me. That already defeats the purpose. Otherwise I need to grab the spare key from wherever I keep it. This is not a mere inconvenience, this is an emergency procedure.