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Compiled executables are pretty simple to deploy without containers. The benefit of containers is that it can help standardize that type of benefit to other runtimes like Python/Ruby where it's much more challenging to just ship an artifact.

In addition to that, with cgroups and namespaces you get a lot of other benefits, which can be used with eg: systemd/etc but it's nice when one tool handles all of it.

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Yes exactly. It's a solution to a problem.

My point is it is better to avoid the problem than employ a solution.

It's not easy when the only way to avoid the problem you describe is to rewrite your whole project(s) in a language like Go. I like Go and have used standalone binaries instead of Docker containers when deploying Go applications, but I don't always work with Go applications.

As other posters said, Docker largely exists to help with any situation where you don't have a single binary. These situations are still very common for many developers and devops engineers. And in those cases, Docker can be very helpful.

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