I can be pretty nasty. Not 'mean' nasty, but nasty by your parents' standards. But not by my parents' standards, because my parents were nasty for their day. ↗
He's nice enough not to want to be associated with a nasty remark but not nice enough not to make it. Lacking the courage of one's nastiness does not make one nice. ↗
What SF can do better than anything else is show us the range of our possible futures, and what we can do to realize the good ones and avoid the nasty ones. ↗
But I like being nasty. I like being cranky. Especially if it's a cold day in Chicago, it's nice to just take it out on Kyle, because he's so easy to scream at, you know? ↗