I think that wages will ultimately depend on how many people are lined up to apply for the job and how many of those people can actually do the job. Most of the backbreaking and mindnumbing jobs are hold overs from the assembly line mentality of the early twentieth century. Machines (robotics) are quickly replacing the jobs where thinking is not required. An example of that would be automobile factories, where robotics are increasingly replacing the assembly line. One of the other commenters mentioned planning and constructing a house. While that does not require a college education, at least in Texas, it does require experience and intelligence as well as physical prowess and leadership skills.
As for the term nonsensical job, people do not give away money for nothing. At least not for extended periods of time. For example, professional athletes actually do not get paid to play a game, or even win. They are paid to fill seats and sell products and possibly represent the organization. Without those talents, a pro athlete would just have a hobby.
Some jobs just look easy or worthless, until you try to do them. I think writing looks easy; but, I have found that there is a lot of effort going into making anything readable.