> That said, ask the people who laid your sewer pipes, built your building, pave your roads, how much they enjoy being out at 4am in the rain and snow working.

I do not think that you can compare those kinds of jobs with modern jobs.

Modern jobs require intensive training. Sometimes studying the subject for multiple years only on a theoretical basis.

This does not work if you do not like what you do, in my opinion.

I myself have tried to obtain a degree in a field that I did not like. I failed miserably. It eventually made me depressed, something I do not wish upon anyone.