I won't say that there are drawbacks to having a cranium the size of a washing machine. It's pretty great; indeed, it's fantastic.
But there's no way of getting around the fact that when you're a Mental Leviathan in a world full of Mental Munchkins you have to put up with a lot of... impertinence.
At first, you just disintegrate the unwashed hordes whenever they make a bid for your attention. And that's satisfying, of course. But eventually even that becomes tiresome.
So at last you start to put up with them, the irritating creatures. And you just sigh, and let your displeasure be known, and point eloquently to the shirt you're wearing. And they start to cringe.
It's not mercy. It's just expedience.