Indeed, you can just not do it for important things - usually the error paths leading to a crash or exit. It's important for embedded software though. But that

Indeed, you can just not do it for important things - usually the error paths leading to a crash or exit. It's important for embedded software though. But that was a bad example; I should've said tail calls. Which are much more common and more important, because avoiding them blows out the stack for recursive code.