I'm late watching this series - 25 years after it aired. and I have enjoyed it. I grew up reading Stephen King and like the episodes that make me think about things. It is a different focus than I expected. The alien aspect is very low key most of the time. But overall, I really do like the series.
As a whole, the stories are written well, especially since it is an older show. But there are a couple of things that irritate. Every time they have to go into a building, it's pitch black. (And a lot of other shows do the same thing.) It's just not realistic that every building is going to be without lights or that every one of those scenes is at night. which brings me to the other irritant. How the show goes from day to night within a few minutes.
Like I said, overall, it's a fun series and has stood up over a couple of decades pretty well.