For all of you that are hanging on to their existing systems, and not upgrading to i5/i7/AII/PhII, here's your thread.
Tell us why you're not upgrading. Don't be shy.
...
1) College happened. = No money = no reason to keep up on the computer scene, because I couldn't do anything with any of it.
2) Done with college, have money now, but I've been out of it for so long, I'd nearly be starting from scratch. I pretty much dropped out in the days of the nForce2 chipset.
I have a C2D system now, as my NF7-S rev2 motherboard died during college, but my roommate picked out the components. My videocard has an nVidia chipset, and I haven't even memorized what it is.
So I'd have a lot to catch up on....and I don't know what games are out these days.
Counterstrike was good, as was Half Life. COD4....not so much. I guess I don't like the experience of it feeling like you're in a warzone. Too serious, too realistic. Half Life, sure you can literally blow someone to bits with the various weapons, but the game's atmosphere was different. COD4 just had people yelling at each other all the time; it didn't suit me.
Giants: Citizen Kabuto: I loved the game. (Well, not so much on the Kabuto missions, but the Delphi/Meccs missions were good.) I don't know how many games are out now that are at all similar to that.
I saw Fairytale Fights on XBox, and that looks (simplistically) amusing; it won't be out on PC for a year or two though.
What I'm getting at there is, I'd mainly upgrade to have access to better games. I just don't know what's available in a genre I might like.
(And HL2 Ep3 is still nowhere in sight.)