Which is better and more promising in sheet metal or machine repair in auto repair? Which one is easier to learn and harder to learn? Thank you.

I studied machine repair, and now I think sheet metal has a better future than machine repair, because cars are constantly updated and learning cannot keep up with the increasingly complex systems of new cars. Sheet metal is different. No matter how much the car's sheet metal is updated, it will still remain the same. The salary for a sheet metal repair job is higher than that for a machine repair job. Hope this helps you