I'll tell you what's happening... we are greedy. The eternal night makes us long for all the options, or everything we could try as our limited resources can manage.
We... are gamblers. Some of us just adore eBay, others purchasing boosters just like smokers, until we reach the rare or the number of commons/uncommons we put ourselves as objective in our dark deck lists. Internet is the spark that lit this fire. No doubt.
After playing other CCGs, I've never felt this sick desire of having more than one deck. I think it was easier then. In Warlord, par example, I only liked Deverenians and Elves, and my priority was the first ones. Fucking good was that game, its a pity it just died in Spain, afaik.
Now, here I am. From the V:TM I thought I could have one or two decks in this game with the clans I roled, maybe a third if it was as *cheap* as I thought (Toreador, !Toreador and Lasombra). Things in the card game were really different as the aims I had for them. At the moment, close to be completed there are 5 decks. Motherfucking fiive!!
Others have a lot more, and other players just stay in one clan... but at least a couple of decks of that clan.
And shared this thoughts with other players and companions, and in the end, its all greed.
"You know? I can try building a deck around this card....."
The beginning of your Apocalypse, my friend.
Don't you think, Metuselahs?