I am experiencing similar richness.
I think it is for both of us a result of many years in the Word seasoned by multiple attendant struggles. When we read or study a passage, we are seeing and experiencing the Lord through the lens of years and years of extended time in the Word through a lifetime of struggle.
At some point, all of us must step aside to allow those with more physical energy to assume their place in leadership. In doing so we need to ensure that those who are stepping in have been under the influence and equipped by one who has walked the same path they will walk. Those who are stepping in would be well advised to hang on tightly to those who went before, to honor and continue to seek their wisdom honed by experience. One cannot be 60 when one is 30.
Isn’t this the pattern of Scripture? Isn’t that what Paul exhorted Timothy to do in 2 Timothy 2:2?