Why Do Cannons Cause Terror?

[ftayl5]

This is something I've been thinking about for a while and have wanted to discuss on here and that something is: the gripping fear of cannons.
People don't bring singular monsters or characters on monsters because they're "cannon-bait" or "asking for a cannon-ball to the face."
For a while, this has really confused me. Beastmen, Bretonnia, Daemons, Elves, Lizardmen, Orcs and Vampires don't have cannons. These armies might have catapults or trebuchets or bolt throwers instead but really, while the Trebuchet is a great option I haven't seen someone use a rock-lobber in almost two years and it's common knowledge the elven bolt throwers are both over costed and unreliable.

Dwarfs, Ogres and Empire are the only race that have cannons. Out of 15 armies! That's 1/5. This is very meta-based I suppose, maybe where you come from everyone and their aunt plays Dwarfs.
As well as there, arguably, only being a 1/5 chance of you even fighting an army with access to a cannon, cannons misfire 1/6th of the time. Not only can this lead to self-destruction or not firing again for a few turns, but the shot itself ends.
Cannons also bounce and unless the target is 10" long you can miss with a cannon and again 1/6 times the ball gets stuck in the mud.
So now we have a 2/6 = 1/3 chance that the cannon will not even hit the target.
Furthermore, the roll of a 1 is always a fail to wound making another 1/6 chance that the cannon will do nothing.
=1/2 chance of doing nothing.
Mathematically, out of 2 cannon shots only 1 will actually get to the point where your monster makes saves.

Combined with the fact that combat generally starts at turn 2 (at the latest) of the second player - a cannon may only get 1 or perhaps 2 shots at your monster before it's in combat and unable to be shot. And if you're smart in deployment you can keep it completely away from cannons between either distance or terrain.

I realise that this still presents a possibility of your monster being killed instantly but it annoys me sometimes when people pass it off as something that will definitely happen.
So please do discuss this, for I quite passionately believe that cannons aren't actually all that scary and would love to hear what other people think.