Now keep in mind that this is a beta. I have a feeling that they tried and had trouble and figured 'lets get them melee mounted combat, instead of holding it ALL off just for magic'.
They wouldn't just not have magic. It's coming. Either in the full release of 1.6, or a future patch.
I don't see why magic would cause issues in the first place. If archery is possible, so is a fireball.
Sure, some could say I have no right to be upset because it's free, but if the government started giving out cheques for a 100 dollars US or CAD, but said "Hispanics,natives,Africans and Jews don't get anything sorry" there would be a huge outrage. Why? Not because they want $100, but they have been left out and now feel jealous while everyone else is having a grand ol' time. Same applies for Skyrim.