It could have been worse, of course: clearing out gold isn't nearly as bad as clearing out a real life bank account, as kids have done accidentally with in-app purchases in mobile games. But still, getting half-way to the gold cap is nothing to sneeze at -- it represents a lot of time and effort, if nothing else.
So what's a WoW-playing parent to do? 1104 couldn't really blame his son, but does think this might be a sign that it's time to walk away from WoW. On the flip side, he could also take up pet collecting: he's bound to be off to a great start!