I didn't watch M*A*S*H* when it first came on. I didn't like/watch War movies or shows. It wasn't till maybe the 3rd season or so I started watching it in Prime Time. Used to watch it a lot on reruns for many years. Just kind of ended up seeing them all several times and quit.
Favorite episode was the one where they (Hawkeye and Trapper/BJ??) made up the imaginary guy. By the end of the episode they ended up having to make him die off because he was getting so well known. At the end Frank argues that he knew him best.
Like it or hate it, CBS had one HELL of a Saturday night line-up at one time:
7:00 All In the Family
7:30 MASH
8:00 Mary Tyler Moore Show
8:30 Bob Newhart Show
9:00 Carol Burnett Show