I disagree with this. You are quite literally giving away your life and body. The wear and tear even after the 5 years to make top rate is something you can see in a persons eyes. Hell, even after one year you can see the thousand yard stare. Those pains and ache will live with you for the rest of your life.. Countless surgeries, time away from family/yourself. I totally believe as you keep doing this beyond the 5 years, you deserve every penny. You get one working able body to do this, and so little time on this earth. People that go driving/stay in the warehouse for a long time will feel this job with them to their grave, even with the proper lifting methods.