I'm the opposite, GoodGuy.
I spend the most on the knives I will use the most.
I just bought a cheapo butterfly knife. I knew I was going to flip it a few times and then put it in a box. I will toy with it from time to time, but I mainly bought it just to have at least one butterfly knife in my collection, for the sake of variety. Since I knew I wasn't going to use it much, I wanted to spend as little as possible and still get a knife that I found (visually) appealing.
If I want to buy a knife for EDC-duties, I spend more money. Right now my best knives are my Leek, Native, and 110. They are also the knives I use the most.
Like I said above, I want to buy a SERE 2000 and maybe a Godfather. When I get the SERE 2000, that is going to be the knife I use the most. I also want a Manix.
Why pay more for performance and durability if you aren't going to use it?
I'd think that the best knives to go cheap with are there ones where performance and durability don't matter since they won't be used.
If a knife is very fancy-looking and I would be scared to scuff it or dirty it, I wouldn't buy it in the first place. I have no interest in knives as art or fashion accessories. To me, they are tools.
I am not saying you are wrong. It's just a matter of preference. I'm just giving my view.
When I am not in a very "knifey" mood and could stand to use a junker instead of one of my favorite knives, I will bring a junker with me since I won't mind as much if I lose it. But most of the time I *am* in a "knifey" mood and do want to enjoy the quality of my better knives. So I can understand your not wanting to damage, wear, or lose your high-priced knives.