It's not a good show. It really shouldn't work. It's all out of shape. The heroes have been elbowed to the side and the comedy villain takes their place- flanked by a robot and a little boy- and gets to deal with people who jump out from behind the rocks of alien planets dressed as yetis and gunslingers and talking carrots. It ought to be insufferable, but somehow it works. It's not exactly art, but it's chemistry- great chemistry. If you tried to reproduce it you'd fall flat on your face.
I used to watch reruns with the kids- a great bonding exercise. I was a deadbeat dad; the kids lived with their mother and I used to schlep over to Bolton on the bus every weekend and bring 'em home to stay with me over Saturday night. Emotionally stressful times. And Lost in Space (which was on after lunch on Sunday afternoons) was this little twinkling star amid the murk.