Read that its good to drain your water heater once in a while. To get rid of the sediment. So I went out to mine today (relocated outside when I re-piped to copper from galvanized years ago, it used to be in an inside closet with no drain (eff that). I was going to drain it and the plastic handle-fitting broke on the drain. so I'm looking at it and thinking I have never drained this thing. I was going to take a vice-grip to the valve and thought, if the plastic drain valve also fails, I'm in for a whole lot of hurt. I think I'll let it sit until it fails.