In some ways, this show is different from the suburban, picket fence, family sit coms of the '50's.
The main difference is the all-male cast, with the "housewife" being, first, a crotchety old grandfather, and later, a crotchety old grand-uncle. To tell the truth, I liked that situation. I think that when the boys grew up and married, and Steve married a widow with an annoying small daughter, that the show weakened.
Steve is forever immersed in his business, often being sent on long trips by his boss. I wonder if that's Steve's way of coping with his wife's death, and he doesn't realize how that affects his sons. Sure, Mike and Robbie were older and could act independently, but IMHO, young Chip really suffered from neglect. I think Steve should have put his foot down to his boss and demanded quality time with his family. Even George Jetson stood up to the tyrant Spacely when it came to Jane and the kids! And if that failed, Steve should have just quit! I bet with his experience and intelligence, he could have started his own business and dictated his own hours!
BTW, according to Wiki, Fred MacMurray filmed all his scenes in just a few days, so that he could pursue other projects. Disney movies, maybe? LOL