My mom introduced me to TOS when I was very little. I think there were about 3 movies out by then (or 3rd) was on the way. I was hooked pretty good. TNG came along when I was in 4th or 5th grade and I didn’t take to it as quick. I remember an older kid on the school bus convincing me it was really good so I started watching the syndicated episodes that came on daily and caught up. Probably started watching regularly in middle of season 3 I think. Eventually I would come to realize TNG was the vastly superior show but TOS still had a great cast of characters that carried the series.
All the other series were just ok to me. I never finished any of them. I would say Enterprise is my second favorite though.
Really want to watch Picard but have no intention to pay for CBS streaming.