I guess it depends on what you mean by "obsoleted". It wouldn't surprise me if finding new motherboards for that old a CPU isn't already getting difficult. That uses the Z77 (or even the Z68) chipset. Those aren't available new any more. Does that make it "obsolete"? DDR3 will be harder and harder to get. Does that make it "obsolete"? Intel officially discontinued the CPU in 2013, does that make it "obsolete"?
IF you have the infrastructure, and it provides the performance you desire, then it isn't obsolete.