I was beyond weary; I was at times literally miserable. I always likened it to Christ's hanging on the torture stake; he was miserable, but he wanted to do it because he was accomplishing good. I was so miserable on the treadmill that I actually liked it when, for example, there was a natural disaster (or potential one) that broke the routine for a few days.
I guess one problem for me is that the JW routine is not the type that fits me personally. I like to do deep research and to have the time and opportunity to ask questions and really ponder and analyze. The JW routine didn't allow me to do that. It just spewed fluff at me faster than I could read it and kept me from doing the type of study, reading, research, etc. that I wanted to do. Now that I look back, I realize that was probably intentional on the part of the org. I was kept ignorant all those years. I didn't realize at the time that I was being kept ignorant; I thought I was a Bible scholar. However, I am well aware now of my ignorance. I feel so overwhelmed that I don't even know where to start in satisfying my desire to really study the Bible (history, archaelogy, authorship, canon, etc.).
When I was on the treadmill, I felt that I spent a lot of time working on meeting parts, but that most of it was not beneficial to me. A lot of the time was spent, for example, just trying to make a certain part fit an alloted time period, or preferrably end about fifteen seconds shy of the allotment. So much of it was not really substantive.
I could never get caught up. I always felt that no matter what I did, I was still behind; there was always something else to do - another mag to read or whatever. And, the irony is that, as has already been mentioned, this treadmill running actually kept me from accomplishing good, and it put me in the financial position I'm in now - one that allows me little time or energy and few resources to use to help others or make a positive impact on the world.