Hah, I have the opposite mindset, I would rather every mechanic be something I have to deal with instead of hoping someone else doesn't mess up. I hate failures that I cannot affect, why I chose a tank in the first place! Overflowing seems to be very healer class specific, and is much easier for more HoT based healers to deal with. Versus something like a disc priest who has 12 seconds of attonement left on a DPS so all their damage will overflow that person unless they ask them to click off their buff, or a paladin with beacon on the tank that can overflow. Also, any healer that is more crit based can have some issues. I mostly just hate (as I mentioned in my edit) that it persists for a minute outside of combat, so if you are the tank with a 1 million absorb you can either wait a minute for it to fall off or game the system by unequipping and reequipping a piece of gear to drop you below max hp so the healer can get rid of your absorb.
I mean that's the exact reason I play a tank too. And after playing a tank for a while, you're bound to develop even further trust issues...especially regarding patrolling mobs and ranged DPS with low self awareness.
But after last week, as a DK, I need a break.