In that use of the word "old," far from us is all thought of dotage or decay.
Now I am getting into my dotage and look on the dark side of everything.
This is a work of confident maturity, rather than eminent dotage.
Within a few years, the number of potentially testable diseases (many not appearing until dotage) will increase exponentially.
But if we do not keep a good balance between the two, we shall discover that heritage rhymes with dotage.