To flip the question on it's head, what exactly do you see as the "evil" potential? The most prominent comments to this effect are just scifi handwaving.

For one, it's bound to teach us something about our brains. And while I'm not usually an optimist, I actually find it more likely that we'll take active steps to stop the evil applications of this if research like this is out in the open.

Think of the shareholders (it's time to start using physical force to stop people)