So, that is exactly what my logic was. My lens was a 1.4/50 that had been in continuous service for 30 years. It was in good condition, gave great images... it just was loose and didn't feel as good to foucs as when it was younger. Then one day I miraculously had a spare C-note in my pocket and the repair shop was right in front of me. I'm glad I had it overhauled but have no regrets from waiting. Had there been image issues I would have taken it in for repair a lot earlier!
Originally Posted by Stephen Prunier
BTW, the only "value" a lens has for me is its ability to produce images.