Plumber and HVAC are also some of the most unpleasant jobs, crawling under houses and into attics.
You are correct that the job can sometimes be difficult or unpleasant, but I always had a job and it always paid REAL WELL.
Showers are made to take the crud off after work and a good steak always makes you feel better.
Being a Plumber (my BS is in Fluid Dynamics) paid for three homes in three different states (all mortgages completely paid off) and a pretty decent retirement, don’t have to worry about the bills or the cost of any hobbies I might take up.