>>212716859ABC, CBS, NBC were the 3 main channels competing for everybodies attention. Then you would have 1 to 2 local stations that would run reruns, old movies, and local news shows. Finally, you had 1 local PBS station, maybe 2 if you had a good antenna.
SNL was good because it was comedic entertainment, and while they had about a 20-30% success rate for sketches, it was the charisma each member had and how they played off of each other that was the most entertaining. SNL gave people an opportunity to see other entertainers perform in a new light with the guest stars they brought in, and they gave people an opportunity to see a lot of bands that wouldn't get opportunities in the mainstream. It was a fun show in an age with no internet, cable TV, and when most shit closed around 11pm.