electrician, plumber, and auto mechanics are exposed to emfs, backbreaking work, and toxic gas fumes and emissions. physical health is important too and should be considered when choosing a job. many plumbers feel like sh** by the time they're 40. very hard on the back and kneesDo something what every person really needs: electrician, plumber, auto mechanic etc. because then you would be providing something valuable for other people. Things like bookkeeping or design, or marketing are useless.