I've done it a few times during summer while studying CS to pay for my bills. They do shifts from 4am-12pm, or 12pm-8pm, or even night shift... They treat you like a bad kid, you get humiliated 24h/7 by who ever is higher in the "hierarchy". On top of that your body takes a hit since most of these jobs are very physical. You get back home sore, exhausted, sometimes it turns into real health issues like tendonitis, chronic lower back pain, etc. Trust me after 2 months working at a factory you'd hate your life. You'd hate yourself. Some people get stuck in this nasty world for decades...
You-I-we, the tech people, love to think there's a better world out there by lowering the level to its bare minimum. It's actually the opposite effect but you have to experience it to understand what I'm talking about. So go back to work and keep cashing out, or, go fishing on an island.