I have nothing against expensive knives, but I don't feel that I can grantee not loosing a very expensive pocketknife, so I tend to buy much more affordable pocketknives. Besides, my pocketknives get used pretty hard, so when something like a Kershaw Blur or Benchmade Griptillian is high quality yet pretty affordable, well, the choice is obvious.
Now, I feel that I can keep track of a larger fixed blade knife, so I would be more willing to lay out $200+ for a fixed blade if one caught my eye.