Pros
Perhaps the difference is that I'm approaching this from late in life. I was thrilled to be hired at 62 and am by far not the oldest. It's hard work and it beats me up almost every night but I feel accomplished. Also, I chose to work and do not have to worry about making rent. The pay is way above minimum and management is firm, but fair. Every workplace has drama, but on Night Sort we all do all of the jobs and are on more/less equal footing. It surprises me that I like it. After a lifetime of job stress in the "cube farm" it's a pleasure to show up, put in the effort, clock out and go home without taking it with me. There are small perks they don't have to do: pizza, candy, Swagbucks, time off at will, T-shirts, gift cards. And you will get in shape.
Cons
It IS physical labor with nowhere to sit down. The packages seem to never stop coming down the belt. It helps to be in a good mental place. Co-workers who are not supervisors will try to supervise you. Decisions are made for the good of the business and not the good of the humans. Just accept this and keep going.