it's bad
Examples
The first law of dietetics seems to be: if it tastes good, it's bad for you.
I think it's bad to talk about one's present work, for it spoils something at the root of the creative act. It discharges the tension.
It's bad policy to speculate on what you'll do if a plan fails, when you're trying to make a plan work.
It's bad manners to talk about ropes in the house of a man whose father was hanged.
It's bad combing where there is no hair.
If it is good then the deed is more important than the intention; if it's bad then the intention is worse than the deed.