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Most people don't, to be fair. The case where zero-downtime strategies are adopted for (at least) a questionable ROI is far more common.

I hope you're not doing anything "safety critical" with general purpose computers, let alone microservices.

Well the arm CPUs we use are in general purpose computers as well. Though you are correct, we don't follow the same practices as general purpose computers.

I hope nobody's life depends on the uptime of a web-based distributed system.

But, well, I also expect nobody's life to depend on it. There would be a short window between people getting into that situation and they not have any life to depend on anything.

I was thinking more like bank/govt websites that go down for "scheduled maintenance".