I disabled it after a very potentially awkward event. I was talking to my wife while Siri on my Apple Watch misunderstood me, triggered itself and sent a text saying "I love you" to our previous maid (which we had fired because of reasons).

Years ago a classmate in college was showing Siri to one of our teachers. As a joke he said "Siri, I love you!" and Siri replied "I'm sorry, I can't find a location for <teacher's daughter>".