I'm a carpenter as well, and I hear what you're saying, but also my coworkers and I were just talking yesterday about how much better metric is 😅 Every base-12 advantage is weakened by the fact that I'm constantly expected to do fractions. Everything in metric is a whole number and it's so hot. Love it when I get an actual number to build something to, instead of a math problem.

If you've ever ordered lumber from a Canadian company, you know how much easier it is to calculate and order in metric units vs. board-feet. I feel bad for their sales reps who have to deal with us Yankeestanis.

Also, all the really nice chisels and hand tools from Japan and Europe are already in metric.