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I don't think anyone taps space four times; they just set tab to insert four spaces. So from a typing perspective, there's no difference.

It's a pretty standard setting in every editor I've used, including vim.

Do you have to press tab 3 times if you're inside blocks?

Do you use notepad.exe or something more ancient like edline?

Every single editor has some equivalent to `expandtab`, so you just use that instead of pressing space x times.