The situation demanding immediate action putting the knife at risk is one in a million for some but for others at least the risk of it is a daily event. Loss, theft and being continuously wet in salt water or even overboard are the big killers for me.Now if you think about that, REALLY ponder it -- that is a rediculous, 1 in a miilion situation to be in for your average person.
Those millions of other things that are non peril based? -- I just like nice machinery. I like the precision of things. the snapping of the liner lock of a chris reeve is a satisfying sound, much like the "ahhhhh" one says after a nice refreshing drink. It's the sound of the hammer drawing back on a well oiled, well made revolver. Its the woosh sound when the turbo kicks in on ones car.
Its a noise and a sense that just makes me smile inside. And I know, if I don't lose it - it will make that noise forever.
Right on the money about the aural and tactile pleasures of a good knife ... and all the other of your examples. I sometimes jack the model 12 just to hear it. Those aural, tactile and visual pleasures you so well describe, however, are quite similar to the usefulness of a knife in that the last increment of improvement is extremely small or even non existent per unit price. The $100 knife will be darn close and even if you loose it, it's 3 replacements to get to $400 will also be close. So again I must contend ... if I am honest with myself ... man jewelery.