Your example is far fetched and you know it. lol @ starting this with saying I'm stretching, then coming up with this example.
So what you are saying is, when the Bible says something is wrong, it could only possibly mean the action is wrong, not the intent behind it. Funny. I believe all seven of the seven deadly sins are really involving someone's motive for an action, not actions themselves. You'll notice the sins are anger, lust, greed, etc. They are not murder, homosexual sex, etc.
So it's funny you're trying to argue that motive itself could not possibly be the sin. Are you calling God a liar?!!!!!!!!!
Matthew 5:28 But I say to you that everyone who looks at a woman with lustful intent has already committed adultery with her in his heart.
^ Sounds to me like God has no problem saying intent is just as, if not more a sin than actions.