I have a theory that, for the majority of Americans who were born between 1937 & ‘97, their favorite shows were originally aired when they were teenagers. I took a poll of 15-20 people, and I was correct for about 2/3 of them. My siter-in-law was born in 1962, and her favorite show is “Mork & Mindy,” which was shown, 1978-’82. I worked with someone who was born in 1974, and his favorite show is “The Simpsons,” which has been shown since 1990. I worked with someone who was born in 1961, and his favorite show is “All in the Family.”
Same works for music. The stuff you listened to in high school is the “good stuff” for your life. Sure, you can add more into the mix, but for me, the defining year is 1984, the year I graduated HS.
I do agree with your hypothesis, though. It makes sense to prefer the shows that you watched during your formative years.