I loved Lost In Space as a child. I think the child stars made it more relatable then.
I've watched it more recently and now wonder why John and Mareen didn't space Dr Smith ASAP instead of leaving him in charge of their only son. As a parent I wonder what the hell they were thinking.
Aside from this silliness I still like other aspects of Lost In Space. The chariot, the robot, the rocket pack.
Thinking about all the people they met on those crummy planets they landed on, Lost in Space was a bit like Gilligan's Island. I took the show more seriously when they were spacebound.