Lost In Space

All right, I'm a geek. As a child, I used to watch Lost in Space -- not the bad movie, but the late-sixties TV show. So I recently ordered the DVDs from Netflix, and I've been watching it. Certainly far inferior to Star Trek, but it does have a certain campy charm.

Here's my question: after the second or third time he endangered your whole family, wouldn't you have killed Dr. Smith? In self-defense, if for no other reason?