:shrug: Doesn't make a lick of sense to me. Guns would be bad, but a crossbow that could hold up to say 5 or 6 rounds and could fire pretty rapidly with a pump action would be okay? I don't really see why. With staves, you don't even need a crossbow. So if because of staves we don't need guns, by that logic they could get rid of bows and crossbows along with not haveing guns. I really don't see a reason not to have a gun.
I have absolutely no problem with repeating crossbows (only if the Dwemer invented it), magical staves, shortbows, longbows, single-shot crossbows, etc., etc., etc.
Long-range, high-damage weaponry = win.
As long as it fits the magical, medieval (not in the sense of our world's medieval) style of TES.
The whole idea of a mechanical, blackpowder-operated gun just doesn't fit the theme of TES. UNLESS, it was some sort of gun that shoots MAGICAL ammunition by some sort of MAGICAL process--like if it was a weapon mounted on a Dwemer golem or something. BUT, by themselves, guns just don't fit...
But, this is my opinion....so....