You claim that morality is a balance of things. For example, though taxation is the involuntary taking of other people's stuff, if it has some good consequences then we ought to not say it's theft.

No, the claim is that taxation is theft if we define that way, but we should look more closely to see whether the theft is justified anyway, even if theft is usually bad.

Morality is not about a balance of things - it is a set of rules to be followed.

Many (most?) people here disagree. What happens when the rules conflict? Then you've got to weigh the balance.