Read what I wrote again. It's the Willing Deformity feat that requires an Evil alignment.
On to the other points about how useless Intimidate is - it isn't!
Obviously, I read the text differently from everyone else. I read it as "outside combat, it takes 1 minute of interaction. In combat it take a standard action. You can choose to demoralize an opponent in combat if you wish, and the target becomes shaken for one round afterwards."
Taking a minute to intimidate someone is just silly in most situations, I agree. The only exception would be in an interrogation room or other other high-stress confinement situation. It's an immediate gut response not a reasoned argument, ferchissakes. Picking up the Batman analogy. He appears, stands there looking all dark and malevolent. He rolls Intimidate with fabulously high bonus. Poor crooks are Shaken, at -2 and try to flee. That's round one. Round two, Batman picks up one of the gooks and asks where the Joker is hiding. They tell him. That is Intimidate in action.
Even if that's not how it's written, I'd house rule it immediately. Read the intention, not the (admittedly broken) wording. Nerf the line "Changing another’s behavior requires 1 minute of interaction" to read "Changing another’s behavior outside a combat situation requires 1 minute of interaction".
If that's what it takes to make it a useful skill, do it. It's your game, after all.