Yep... About a year, year and a half ago, I completely burned out on knives.
It wasn't that I didn't like them anymore, I just lost the passion. I think I was like you Flat, knives consumed me. As soon as I got up, I was searching for the next one. Then no sooner had I found and scored one, it was on to the next one...
At the time, I was collecting mostly older Case knives, and some Schrades.
One day when I went to take some out, and wipe them down, I found I just didn't enjoy having them locked up in a safe anymore.
So, I sold off a bunch, kept some that I really liked, and started carrying them.
I found I got more enjoyment out of having them in pocket, and being able to take them out and use them, than I did just hoarding them.
I did the same thing when I was collecting old Winchesters and Colts too.
There were two very big safes that were crammed full, plus guns in the drawers, in the closets, and under the beds. One day I started looking around and it hit me. I thought to myself, this is crazy... I did the same thing with the guns. Kept a few I really liked, and sold off the rest.
Funny thing is, there are only a few that I wish I still had.