I used to collect knives for value. Had quite a nice collection worth some nice bucks. Then I gave them all away. (Unfortunately, that was before I met all you blade-thirsty knifeknuts!
) Now, whatever I buy, I use. And use. And use. I have several knives, and while I don't use them all at the same time (I only have two hands!), they all get used. And used. And used. (Did I already say that?)
And, as they say about survival: 'the survival knife is the one you have on you when it comes time to survive,' so the using knife is the one at hand when it's time to use one. While I probably wouldn't spread peanut butter with a large bowie, my Spydie Military does a great job of it!
If you've got a blade that cost you upwards of four digits, and you bought it to look at, put it under glass and look at it. But if you didn't buy it to look at, then you should be using it for whatever you can. My large bowie won't fit in the peanut butter jar. My Military will. And you probably wouldn't use a Spydie Toad to carve a turkey. But if the shoe (or knife) fits, use it.
I think your friend may be getting into the 'spiritual' side of knife collecting/using. As if the knives, besides having personalities and 'character', also have spirits and are nearly 'living beings' of sorts. Sounds a mite like 'Star Trek' or some other science fiction story. IMHO, that's getting off the deep end into the Twilight Zone!
Sort of like when some people (I know y'all have never done anything like this
) talk to their cars: "C'mon, Betsy! You can do it! You can start! C'mon, girl! I know it's cold, but you're a gooood girl! You can do it! Start, baby, start! That's it girl! Alright! That's my baby! Good Besty!"
If you want to give 'life' to your knives, I guess that's your business. Me? I use mine. And use them. And use them.
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Champions make improvements as fast as losers make excuses.