It was, along with CHiP's, Emergency 51, Muppet show, Happy Day's, & PBS Nova specials were what I recall as the "after dinner" & "before bedtime" week night shows back in K-6th years of the 70's.
There is another user on here that I recall banter with them about M*A*S*H specifically and "she" talked of how they got the dvd set of the entire history and watched it with there kids a couple episodes a night --- all the way thru....
Don't remember if they bought it new or checked it out from library or a recycled books store....
That's was not the only TV show we talked about either.....
(Thinks aloud)"I'd bet the search function will find it as I wrote the title here as it did back then....." Hmmmmm
....[edit: Found it! Was in a private convo. They got the entire set as a present. There story was cute how they made it family time and stretches out over several years watching all 11 seasons.
I gotta admit i'm itchin' to see the original movie. I never got to see it all the way through.]