Real need and optimal utility do not always go hand in hand. I enjoy knives, but I haven't nearly as many as a large number of you. Still I have quite a bit more than 2. Some of the individual missions for which I have "optimized knives" (or tried to) include:
1. Dress up occasions
2. Ordinary work (in the city) occasions
3. Work around the rural homestead (several submissions here including brush clearing)
4. Day hiking
5. Back Packing with low "survival situation" probability
6. Hunting/game skinning
7. Wilderness (high "survival situation" probability) living
At a minimum this would be 7 optimized knives, and I do have at least 1 knife in each category. Admittedly I have two, sometimes even three knives for some, but not all, of the above categories as well. This is because I'm not always sure, until I try them, what would be the optimum knife
for me in some of those categories. Also, optimum is often "optimum at a price point" and from year to year, that price point might change.
Now theoretically, as I discover a newer and "more optimum" knife for any given mission, I could sell the older "less optimized" knives, but it isn't always that simple... Perhaps that's where my particular addiction problem comes into play