I guess it probably depends on where you’re going. I went to the UK earlier this year, and my experience was mostly painless. Landed in Manchester, and they basically had self-checkout customs. I scanned my passport and looked at a camera once, and that was it. It was actually more of a hassle and more invasive coming back home and getting back into the country.

Even cash breaks down pretty quickly in a hypothetical situation where you have something similar occur that lasts for an extended period. When banks’ systems are impacted, how do I get more cash from my account with them when whatever amount I had when the system went down runs out? I haven’t had a physical passbook for an account in a good 20 years.