Evolution isn’t divine, it’s random mutation that generally benefits it’s current environment. Considering most of our evolutionary traits emerged thousands, if not millions, of years ago… I’d say we can safely conclude that a lot of our evolutionary instincts aren’t especially relevant to our current circumstances.
Part of it is identifying differences between discomforts. Feel a little hungry? No big deal.
Feel sharp stabbing pains? See a doctor, dummy.
You could always use the metric system, that was always allowed. Most food (I’ve seen) has both imperial and metric measurements. Most digital measuring devices and lots of analog ones will have options for both. Speedometers generally have both.
Really, the only one stopping you from using the metric system in your daily life is you. Unless of course you’re saying you want other people to use it. Which is a distinctly different proposition.
Evolution would rather we eat as much as possible, cause who knows when our next meal will be.