The trick there is that you can't easily disconnect who you are from what you do. If you're the sort of person who would really push that button, then people will be able to tell; it will show up in your other actions. Your other virtues will decline as well, and you will be less successful at making friendships, doing business, and having a good life.
I don't go around telling people, and if I was in the audience I would raise my hand with everybody else.
I'd be really interested to hear what the Less Wrong community thinks of this. Don't spoil it by reading the comments first.
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