Right, in this post I'm assuming Vivec got CHIM,
Why didn't he drive the N'wah out of Morrowind?, Why didn't he destroy Dagoth Ur and blight?
If I could control the fabric of the Universe and I was Vivec, thats what I would do.
Simple answer: Because it would be kind of contradictory to the whole point of the game. :shrug:
Vivec didn't *always* have CHIM. In fact, attaining CHIM is not really a matter of "attaining" it at all... it's a matter of "attaining" it and
maintaining it. Recognising oneself as the Universe itself and as an individual simultaneously is counterintuitive, and requires one to escape the bounds of logic, which is an enormous feat of concentration.
From the Ehlnofex: an ancient sigil connoting 'royalty', 'starlight', and 'high splendor'. As with most characters of that dangerous language, the sigil CHIM constantly distorts itself. Those scholars that can perceive its shape regard it as a Crowned Tower that threatens to break apart at the slightest break in concentration.http://www.imperial-library.info/obscure_text/vehk_teaching.shtml
In a way, CHIM could be seen as the ultimate state of denial. "I am myself, but I am also everything and nothing". You kind of have to work at it.
In fact, the phrase "I have achieved CHIM" is kind of nonsensical, when you think about it. As soon as you recognise yourself as a person that did NOT have CHIM at a certain point in time, you contradict the state of having CHIM and you lose it. Witness MK's post in http://www.gamesas.com/bgsforums/index.php?s=&showtopic=548893&view=findpost&p=7906414.