I have met people who I don't think really want to work any hours and those are NOT the kind of people I like being around. You obviously know the people you are thinking of far better than I do, but I would remind you that 8 hours per day, 40 hours per week has been considered "standard" for a full-time job, in large part thanks to the hard work of labor unions over time.
I am not sure what part you consider to be a rant. That is certainly not the way I intended my OP to be seen... This is contract negotiation time and the union has sought the input of the rank and file. Many other people have complained about excessive, unwanted overtime and I have tried to present a workable solution here with the hope that an idea will work its way up...
I get that you have to accept certain challenges or discomforts which simply come with some particular job. I understand that long haul truck drivers need to accept that they will spend days away from home at a time. Also, driving for UPS will always be a different, grittier experience than say working the front desk at a doctor's office, and there is absolutely no language that can be written into our UPS-Teamster contract to make that unchangeable reality otherwise, but I do believe that at least most drivers SHOULD be able to have 40 hour a week jobs at UPS, IF THEY SO WANTED, at least for most of the year. If someone's ideal is working 8-9 hours per day, I am fine with that too. I have no desire to impose a fix on something which someone doesn't view as broken. Ditto for the person who has concluded that 11-12 hours is what ultimately works best for him.
I want to say again what I said in my OP: As best I remember from recently looking at the package car driver rosters at the hub out of which I work, approximately 10% of the people on the lists are out longer term due to some injury. I strongly suspect that this level of driver injury occurs as a result of all the overtime full time package car drivers have typically had to put in all throughout the year and that we would all be better off - rank and file workers and the corporation - if full-time drivers at least had an easy option of working right around the standard 40-hour work week and getting the off time to rest and recover properly in order to stay safe and in good health.
On a more personal level, after spending close to four years as a preloader, I went on to become a part-time air driver nearly 20 years ago where I have chosen to stay and it has worked out for me so far. One reason among others I have not wanted to go full time is because of all the overtime I know I would be required to put in whether I wanted to or not. I can list in my mind plenty of people who went full time package from part time air driving only to then find themselves getting injured after say 1 to 4 years. Some of those drivers eventually took some settlement and left UPS altogether. It is my thinking that if their hours hadn't been quite so long, they would have managed as full-time drivers just fine...