People don't use static site generators to simply avoid having to set up caching. They use them for their simplicity and flexibilty. You can edit the posts any

People don't use static site generators to simply avoid having to set up caching. They use them for their simplicity and flexibilty. You can edit the posts anywhere, even when not connected to the net. You can use your favorite text editor to edit them. You don't need to worry about upgrading your blog engine to patch out the latest security vulnerabilities. If you later decide to change markup formats, or templating systems, or change your blog engine entirely, you don't need to decide between importing your content into the new one (which is generally a messy and lossy process) or running an outdated one which you still need to keep security updates on or being exploited; you just leave your old static files alone, and use your new generator or blog engine or whatnot for the new content. It's obviously not appropriate for every use case; if your data really needs to be dynamic, then it doesn't help. But there are plenty of reasons to use it beyond just efficiency, and even there, it makes getting those efficiency gains a lot easier than a dynamic site does.