Re: use or keep them?
I think that's a personal decision...I've been given cheap knives as gifts that I've used at work, but in my opinion it just depends on who the giver was.
On the other hand, I once gave my father in law a really nice medium sized knife and while using his truck one day I found it in the door compartment...I could tell he had been using it and it made me feel good to know that he didn't just re-gift it to one of his sons or employees.
Our greatest pretenses are built up not to hide the evil and the ugly in us, but our emptiness. The hardest thing to hide is something that is not there.