Why would you buy such an expensive knife? What are its advantages over a $50 knife with a similar shape and quality steel? My experience is limited, but I can't understand why the difference.

I just bought a Benchmade 710HS (plain edge, M2 steel, $130) which I love. It's smooth--like a fine tool, but I don't know that I'd prefer it in the field in a survival situation over something else that's half the price, or less.

What significant advantage does such an expensive knife as what Chris Reeves produces ($300+) have over a $50 knife? Is it the toy factor--mine is cooler than yours--or is the extra $250 worth the difference?