I can see little or no benefits for endurance training. To me that sort of activity leads to injuries and worn joints. I can't tell you how many people over 65 who need joint replacements. Mine are fine.
Hypertrophy must trigger the release of growth hormone and so there are benefits naturally without needing a prescription. Older guys don't say they are using hormones but just replacing chemicals.
That isn't what I want to do. The only pills I take are aspirin and that is very rarely.
My arms and calves are hard. Sure I am carrying some safety fat but I am solid where it counts. The waist is another thing. That is where adipose tissue stores on men and not so easy to remove.
You seem like you are making excuses for your inability to lose body fat from certain areas. From the photo's of you I've seen here, you are carrying around a fair amount of what most would consider unhealthy body fat. Maybe it is healthy for men of a certain age to be a little overweight, especially in the gut. I happen to think otherwise.
Regardless of how fat and out of shape you appear in your photos, you probably have a base of muscularity and strength. In as much as you and I are about the same age, I hope this means you are healthier then the average Joe. For my money, I am going to go with the leaner is better philosophy when in comes to senior citizens like us.