You aren’t running critical military intelligence network or something.
That's not the point. Performance tweaking operating systems is fun for the heck of it. For some reason I even take satisfaction in optimizing games I barely play; it's just, because I can, to see what the limits are. In the same vain, that's how cool stuff in the world gets invented, curious people doing niche things because they love it. Not because of military urgency which is an often regurgitated myth.