You... did? Here:
I am extremely confused. A man is memories + drive + good stuff? (Or do you particularly mean Dalinar is?)
Why is his drive what makes him?
Well, we hardly have any evidence for this either way, so all I can say this that this seems extremely unlikely, but we'll probably have to agree to disagree.
The thing you call as a "horrible evil look" was Dalinar being Odium's Champion, right? Do you think that is likely, or even possible, without the Thrill?
You have no evidence of the second claim.