IMO if you still have hardware from the last two-three gens (cpu&gpu), there just isn't a significant reason to upgrade until Haswell / Maxwell. There is nothing special (referring to games) coming out in the near future anyway.
Games that really push hardware and innovate have really fallen stagnant over the last few gens, and in retrospect they've had us suckered into constantly upgrading our hardware chasing benchmarks just to find that games were not even fully utilizing new api's and features until a few years after it's release. For example people would be upgrading their dx11 hardware to the next dx11 gen and there still were hardly any dx11 games! Developers have been coding & optimizing (if you can call it that) for the lowest common denominator of hardware for years. Trying to reach the biggest audience, while trying to save money and maximize profit.
By the time Haswell/Maxwell is out Intel will offer 8 core cpus and we will see a significant jump in gpu horsepower. Also by then the next gen consoles will be out and with a similiar platform as pc's, we will see a slew of games coded to take advantage of all 8 cores and ported over to the pc or visa versa. It shouldn't be difficult for developers to offer pc users with ways to up the quality and tweak the game further. Let's hope!Edited by ]\/[EGADET]-[ - 3/29/13 at 11:40pm