To the OP, you have nothing to worry about. As has been said, it's normal, and expected.
As for the last half of this thread, besides overvolting, heat is the main killer of any electrical appliance, be it a CPU or whatever else. Despite what Suzuki would have you believe, you ARE shortening the lifespan of a component by running it hot consistently. Will there be some components that outlive their usefulness, even if you run them hot (way hotter than recommended)? Yes, but why take the risk with a CPU when decent cooling is so inexpensive?