When I was a child 1960, the joke was the only union more dangerous than the Teamsters union was the Soviet union. I thought it was a joke until I actually came under control of the union. Of course it was much easier to leave the Teamsters union.

They
only hit me up for an extra $200 on the way out the door.
to put that in perspective, back then that was about 350 gallons of gasoline!
I didn’t pay it, & they said I could never be in the Teamsters union again, yet I never shed a single tear. They charge you to join, they charge you to work, and they charge you to leave. Forget what happened to Jimmy Hoffa: if that’s not gangsterism I don’t know what is.
I’m not saying there are no benefits to belonging to a big gang, but just understand what it is.
Now I cleaned ball bearings with gasoline when I was six years old, and I have worked on machinery all my life. I fixed Ramblers in an AMC dealership while I was in school. I built engines. I welded. I fixed conveyors.
In retirement I work on machines virtually every day; but the end of the story is that I didn’t retire as a truck driver or mechanic.
I became the guy that built computer networks, trained the new engineers how to run the system, and what the standards were.
In fact, the only reason I ever considered taking a union job is that after the Vietnam war ended, most of the government aircraft contracts ended. I was engineering for Grove/Manlift, and When Congress pulled the plug, they virtually closed our factory overnight.
I took a job with a heavy equipment rental company, where I got to operate a huge variety of equipment. Except for the union BS it was actually an interesting job.