Had a power outage and my generator did not come on line (fried circuit board). When power came back and I booted my PC, it BSOD on me. Had to lower my clock to 4.7. I guess what I am trying to say is that you are right. The CPU will not last forever.Tree fiddy.
Don't count on the 2500k lasting forever - the IMC in mine died randomly about a month ago, no warning. After it happened I looked in to it, and it's more common than I would've thought.