Like you said, to each his own. I guess to a nostalgic player, certain collectors can be disturbing. And I do think there are levels to the hobby. My level is, I want every game so that I'll always be able to play each one when I want to, and because I love the NES. And I can share that with my family when the kids are old enough. There are like-minded people who operate on, and understand my level. Some collect at a more intense level, some more casual. It's not a measurable scale, but I think if I had to quantify it since you seem to be searching for why I said "level" it has a lot to do with the time we spend on the hobby, and what we spend that time doing...whether playing or writing or searching/buying.
Collectors do not equal investors or resellers, as I feel your post implied (which disturbed me!). Perhaps your impression is colored by some people that you're referring to in another thread/forum... I just say this because you instantly equated sheer volume of purchase to collector level, where I drew no relation...the collectors here are the contributors to the hobby, and they range from players with a 23-game "essential" collection to ... well, Hounder, Dain and NGD

But we all share a love, and that's what defines a collector to me really, with the NES. It's not even physical or financial really, some people post here and have only ever played on emulator!
What I was trying to say is a lot of the Hot Topic kiddies would get a bunch of games, then as soon as it went out of fashion, yard sale/ebay them. They're not collectors...we keep what we hold dear regardless of fashion. I don't think it has anything to do with monetary value or "gotta catch 'em all" in a lot of cases...if we were out for money we'd just work more hours or trade stocks instead of games, and that eventually would override our NES hobby...it's another reason why people drop out and it's sad but totally understandable. Depending on what the hobby is to you, if you can't afford it it's gonna give way to life. But I digress...