I don't ever remember having 120 channels when I was a kid.
At first we had two, CBS & NBC. They'd go on the air about 6:00 a.m. and off at maybe midnight. Later, and I'm not sure how much later they added ABC. Other than turning the dial and trying to adjust the "fuzz" of another channel simply because it looked like something was on, that's all I remember.
I remember the family watching "I Love Lucy", "The Honeymooners", Gunsmoke. Saturday night was the night my dad would watch the fights (Boxing).
Although they were out before then, my family didn't get a color tv til 1970. I remember it well, because that was the year I married and left the house and same with my sister. We'd tease my dad that he waited til we left to finally get a color tv.
TIS