I mean, is there a lore explanation for this? NOT just physics or laziness?
I mean my theory is that maybe crossbows were a Dwemer technollogy that is slowly being lost or is limited to Morrowind, but for spears, I don't know, I though spears were supposed to be the most basic of weapons.
In FACT I remember reading somewhere that in the Middle Ages swords were only used as backup weapons to spears, almost the equavlant of a modern day equavlant of an assault rifle to a handgun.
But seriously is there a lore explanation to this, maybe do people in Cyrodiil consider them unhonorable? Maybe they're only used for campaigns and not in common use with gaurds and adventurers?
Hmmm......Perhaps spears are un-used in Mirrowind because of the land area? It is a mountainous region, with many swamps and pools of water. Maybe they don't use spears merely because it's to difficult retrieve them, if thrown, attack with them, if climbing up a mountain, and other such things. Or perhaps they have advanced enough that they no longer need the spear, as you said it is the "most basic of weapons". The second would by Cyrodill's only real excuse, since there are many hilly areas, and even in the mountains there would be flat areas.
As for the crossbow, perhaps it is lost. Maybe Cyrodill lost touch with that weapon, as did Morrowind. Though it's hard to believe that a place filled to the brim with Dwemer remains has not one crossbow....or maybe there was. Maybe it an unrecognized weapon that an adventurer stumbled upon, then sent back to the mainland, or to a Dwemer Reshearcher, to discover what it is and how it works. And our charactor starts off just a few weeks after this was found, meaning it wasn't in mass production- nor any production- yet.
These are just Theories, so I'm not saying there 100% correct. Oh, and by the way, I'm new to the Lore section of the forums. I've read over many things, but not quite a master at the lore.