When I suspected something about my wife I decided to install hidden cameras all of my house so that I could spy on her.
Why did you install a spy camera for your wife?
It's not always bad to secretly spy on other people, right?
It's bad to spy on your wife. If she finds out then she won't feel safe being there anymore.
I got her to calm down, so it's fine as long as my wife doesn't mind.
Well if she doesn't mind then that's fine, but you still shouldn't snoop around what your partner is up to. You'll really hurt your relationship if you don't stop.