Because surely Steam causes all the bugs, cant be Bethesda who are new to coding with Steam.
Besthesda is new to coding, period.
The same issues with Arena, were in Daggerfall, Morrowind and Oblivion. Once your "saved game" file got too big, it would crash. You'd suffer random crashes. Pretty much, a lot of what PC gamers are dealing with in Skyrim. And yes, I know there's a lot of other issues with Skyrim, I'm just stating the known problems Bethesda has had in every game of this series.
With that said, how is it possible they still haven't learned how to avoid the problems they've always had in this entire series, going back to TES I: Arena from 1994?
And even with those known problems, I still played those games, and bought Skyrim.
As for Steam, I didn't see the need.
Uldred