Yes, it might not be realistic, but like most shows back then (Leave it to Beaver, My Three Sons and even up to the mid 80s (Mary Tyler Moore, 8 is enough) and the 90s (Home Improvement, Growing Pains, Walker, Texas Ranger) they had nice shows, even some shows today (Simpsons, King of the Hill, CSI, NCSI) are good shows, but there is more JUNK on TV then good stuff.
The favorite show of mine in the 1970s was Sanford and Son, it was funny, not politically correct in the least and did not have a moralizing meathead. How I wish shows like that were still around. Remarkably you can watch almost every episode on youtube.