These days, I'm much more concerned about my conditioning, which is naturally very poor (as subject to genetic factors as size and strength are).
The old timers in the Muscular Development magazines I got as a teenager used to say, "When you get past age 40, your priorities change."
I used to say that would never happen to me; I'd become a giant and remain that way until they shoehorned me into a coffin.
Well, now that I'm 52, I've found it to be true. My aesthetic priority now is to develop a leaner, more rawhide-like look than the cannonball-stuffed-in-a-baggie look I'd wanted in an earlier day.
But at the end of the day, I just love the euphoric feeling I get after a hard workout under the bar.