I didn't mind factory work when I did it. Reason being that my last string of jobs were mostly retail. I remember as a teenager, having to listen to foul mouthed idiots bitch to me about how Walmart is cheaper and old people shitting all over the floors in the store, in contrast to factory work, which was repetitive but it gave me a lot of time to think.
I still think retail is the worst (other than fast food).A lot of people might be tempted to say a grocery store but grocery stores do not try to indoctrinate you repeatedly about being part of some awesome service team. They do in a way but it is non-pervasive. Plus since most of the general managers are cheap fucks, they have done away with the commission systems. Retail does have it still so you have to ask hundreds of customers daily to buy shit they don't want. It is even worse if you have a quota. Although in my experience, retail has such a low bar that you can go under the quota or do anything. The only way they will fire you is if you steal. You can show up late, be unshaven, or hell, not even show up at all, but as long as you don't jack anything, you will have your job.
Internships are the answer to the question.