I'm totally with Captain on this one (and Y va, I think).
The "wouldn't you celebrate, even a bit" questions pretend to be smart, but they're not revealing anything significant: we all live with multiple values at any given time (and as some mentioned earlier, we have different mechanisms to deal with that; ignore some, etc.).
So we'd be extremely happy we won the CL, But as Captain said - it would feel wrong. And this "dirty" feeling will stay with us (despite the automatic: "only the score matters, only the trophy will be remembered").
You can also win from a fluke goal in a game you really didn't deserve to win (that's actually a good one; like the 2005 FA cup, e.g..); and you can win cos a ref made a massive, clear mistake (feels a bit worse, right? but perhaps still on the positive side of the spectrum). And then you can win cos the ref was not honest (start with: he was a fan of arsenal, and never said it to anyone, and he gave the winning goal on purpose; continue with worse examples, till you get to: "he was bribed". By which time if you don't regret the whole affair, I can't help you).
Back to Suarez: we'll win, but it would be "thanks" to a player we hate with all of our hearts? and what kind of a state of affairs is it to accept having a player we profoundly hate on the team?
I accept opinions can vary on this, but my mind is clear, and (like captain said) I won't budge.