Well, cofty, I hate being an impotent mom(ahem).
I really DO love my kids, but it doesn't change the fact that I don't have the absolute power to help them--even if they are in desperate need.
It's a crying shame, but maybe the carpenter was pretty disappointed to find out that his Abba didn't have a way to stop shit from happening either.
Maybe an impotent god is having to do as much as he can with love. And we all are just going to have to deal with it.
But that is a very good question-- If I were writing propaganda to win folks to my religion I would definitely tell them my God was all-powerful.