When "Saturday Night Live" first aired... this is hard to believe now, but I didn't even have a TV, so I didn't witness the big start live.
I caught up with it on repeats and liked it okay, but I never watched it religiously. Later still, I caught more repeats (I believe some channel was showing it every night in the early '80s) and now I really liked it. That was still the original cast. Then, what with both moving around and being interested in various other things, I dropped the habit. From then on, I watched it only intermittently. There have been certain episodes with later casts, and certain kinds of sketches and impressions of people that I absolutely loved, but the habit was gone.
I have the box sets of the first five seasons on DVD, and just a couple of highlights ones from later on. I'm afraid I've hardly watched it at all in recent years.