You know...this thread seems pretty critical of Coach, but I appreciate that it comes from a space of genuine concern for his health.
Coach, you know that I've always been a supporter of yours, but I just think you have nothing to prove. I think you mentioned above being lean at 190-200, but if you were lean at 170-lb, you would be more muscular than 99% of men at any age! If you are comfortable at 200-lb and relatively lean, then all the power to you. Some men can be heavier and be more comfortable at that weight. I have decided that for myself, being 175-lb and relatively lean [compared to the general public - not by competitive bodybuilding standards] is more than sufficient. I can be pretty strong [for me] at that weight, be competitive nationally in my weight class in strongman, and overall, feel pretty good.
You obviously have a better capacity for gaining muscle than I do though. For example, even at 185-lb, my weight starts going straight to my stomach. So I absolutely can't be a big man - especially naturally. I suspect I could be 200-lb with a smaller stomach if I had some assistance, but I feel 175-lb for me is the weight that maximizes strength, fitness, and overall just feeling good.
Like I said, you are going to be more muscular than 99% of men even if you weigh substantially less. It's also pretty apparent to me that you are going to be a fit muscular man for basically your entire life. And again - you have absolutely nothing to prove.
I hope none of this comes across as jealous. It goes without saying that you have a better physique than I ever do. And I am impressed with your results over 50, or for any age really! You and tommywishbone are both inspirations to me. No hate here!
Let's not forget that you've already spent years as one of the leanest and most muscular men around.