Thomas- I wouldn't worry about this. I've been revisiting some very old negatives (some 30+ years old), over the last 2-3 years. While the ones I print now are far superior to the prints I made then, the thing I most notice is the improvement in my "vision". My compositional skills have improved, leaving many of the old negatives uninteresting, and not up to par with newer work. Still, I've been able to get satisfying prints from negatives I hadn't back then. I do think it's a worthwhile exercise, if for no other reason than to gauge improved skills. I think darkroom skills are a lot like watching a pet, or child, grow. You don't see changes on a daily basis but, every year, they seem to have grown larger. It just sneaks up on you, unnoticed...
A print, diligently created, will never be obsolete. Time may lead you to interpret it differently, but it won't diminish earlier attempts.
Your name, under a Gallery thumbnail, is an automatic "click" for me. I know I'll be treated to an interesting image, created by an image-maker who has the desire, the vision, and technical expertise, to convey his ideas. Don't let the frustration paralyze you. In your case, I think you're trying to eek out the last .00001 of print quality, which is far more difficult than getting the first 99.00009.
Good analogy to age, Eddie. While one can add lots of knowledge and read about skills in a short period of time, perhaps it's best to just practice over a long period of time, in order to really get into the higher ranks of printmaking. What good is all the knowledge unless you know, with your hands and spine, what to do with it all - to actually churn out prints that dazzle?
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh