I've said that many times myself....
On a side note, maybe we should have a thread going about loudness levels. With everyone on here building all this high performance gear and hooking it up to so much power, I think it's smart to measure just how loud its getting.
These big efficient speakers can get up to harmful spl levels with little power. I've measured over 117 db in my room just from my mains on less than 100 watts a piece.
Erich is right. It's the lack of distortion that makes it feel like you can keep cranking it, but I bet if you bust out the meter you will be surprised.
Be good to your ears. You cannot reverse permanent damage.