As a personal observation, I don't feel that I look back on my negatives as often as I should, but when I do I am not usually looking for negatives to print. I do find those occasionally but I am usually trying to evaluate whether I am improving or not.
Lately I have been working with 35mm a lot more than in the past and I am not as pleased with my progress as I thought I would be. I really felt that being able to make more exposures by using a smaller negative would be helpful but I am beginning to believe that it isn't working out the way I thought it would.
Interestingly I think I was probably progressing more back when I was using large format. The difference was probably that I was paying more attention to my composition. Happy snapping seems more likely when I am using 35mm than with 8x10 or 11x14 film. I think I am beginning to realize that, for me at least, the use of 35mm is not the best way for me to improve. It seems to become more about quantity. Quality is certainly still possible but I haven't found it in my 35mm work as frequently as I thought I would when I started working with it.
Kind of odd how things don't always turn out how you planned. Anyway, I consider looking back over my old negatives/prints as more of a useful, personal, learning exercise.