User blog comment:Ygrain/EDI and the geth: their purpose in the story?/@comment-5337704-20120727095430/@comment-2228120-20120727185629

A person who has no qualms about using evil means is evil for me, no matter the cause - in other words, the end does not justify the means. TIM both allowed and ordered countless atrocities and I don't think he ever lost any sleep over it.

The thing with Control is that it gives SHepard too much power, of the kind that is easily abused, and he cannot be sure it won't alter him, so that he becomes the same as those examples I quoted previously.