Time for me to throw my opinion out there. As both a tool user and tool collector, there isn't any tool I own that I wouldn't use EXCEPT for a very few brand new pieces that I specifically like to keep as nice unused examples.
Most every tool I own was bought used. This helps in part to not let me say " Oh, I can't use that, it's too pretty to get dirty." After all, somebody used it for 30 years before me. It has developed character in the form of rust, scratches, chrome plating being gone, maybe some nicks and gunked up dirt, whatever.
To each his own. For the guy who collects brand new Snap On ratchets, good for him. He has the money to do it and the passion for it. He's supporting the economy too. To the guy who buys strictly for necessity at work, who would ever look down on him? He may not want 50 ratchets at home too. He's also supporting the economy. The dealer loves both customers I'm sure.
To those who think collecting is no good for you, sure, it can get crazy. That's when you stop and re-evaluate things. Wives are good reminders for that, right?
I say thank you to they guys who hoarded lots of good old stuff and made it a little harder to find. It sparks an interest in younger collectors and helps guys like me keep searching for treasures. If nothing was considered valuable then two guys would walk through a yard sale and say: "Great, another Stanley #2 wood plane. I don't want that, do you?""No, I don't want it either."