If you want to spend the money on an insane 6 to 8 core intel processor, no ones stopping you. But gaming and most applications utilize fewer, faster cores. The i7 4790k @ 4.0Ghz stock is an insane processor (I have it personally) and it doesn't cost a ridiculous amount. You can even get an i5 and overclock the shit out of it, saving even more money and not losing very much.
I'd say go for the 4790k and use the rest of the money on a GPU, since more expensive GPU's make more of a difference than more cores on a processor.
