I must have explained incorrectly. I'd only consider the axe a superior option if there's no risk in the haft being destroyed.But, that's the thing, we're talking about the perils of the warp here. No matter how small the chance, us possibly destroying our primary weapon every time we cast is an unacceptable risk. Like, there are acceptable risks, such as not coming back alive from going on our lonesome into an orcish stronghold, but what makes this one unacceptable is that it's costly and avoidable by virtue of just not using a consumable item as the handle for our primary weapon. It's wasteful, more like, and not particularly handy for what it's trying to do.
If it's going to be destroyed we'd be better off just eating the miscast and hoping it isn't too awful while swinging our weapon around rather than blowing up our weapon and then being attacked by enemies while unarmed.