There are several tradespeople I know (electricians, plumbers, carpenters) who make more money than I do. But I don't begrudge them that, electricians do work where a mistake can literally kill you, and all of these jobs have high injury rates and will wear your body down much faster than sitting at a keyboard.
Edit: and there are no "open source" tools. You have to buy them, and good ones are not cheap.
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