Earlier quoted context omitted.
In manual labor you get physically tired, your joints grow steadily more achy, your run the risk of injury - obviously it's unpleasant. In mental labor you get fat and achy sitting at a desk all day, your sleep schedule gets messed up looking at artificial light constantly, your mental health degrades and your risk of suicide increases - obviously it's also unpleasant. We can all agree the manual laborer's job is har…
Oh come on, do you really believe the drivel you just typed out? Any office worker can do exercise to mitigate their risks, no labourer can magically make his bad back or destroyed knees better again.
I fail to see how exercise changes the light coming out of my monitor. Manual laborers can also mitigate their risks, but in neither case do all the issues completely disappear. As someone who's done both, I can tell you that the grass is not greener on the other side, and everyone else I know who has done both has encouraged their kids to at least seriously consider the trades.