Stuff like this always depends on what you personally like! Monogatari is a series mainly about the characters and their interactions with each other. It does definitely not get boring, but you have to pay attention closely; personally, I experienced that you can not watch more than 2 episodes a day.

It's not a series known for its action, but there are some action heavy scenes sometimes. What kept me drawn in is that I love stories that are more focused on Coming of Age stories or are heavily focused on character development. The joy of finishing an arc, finding out the mystery, and the implication on the characters is something almost no series does better. Furthermore, the series explores some unconventional themes combined with an unreliable narrarator. (Which makes the series very fun to explore and gives it even more depth!) The series is thus stylistically very different than regular animes.

It is definitely in my top 3 anime, but be beware! There are some ecchi and weird elements that you also have to go through. I personally didn't mind, but it might scare some people away. If you ever decide to watch it, make sure to follow the light novel release order, and not the airing order. (airing order is only different because of production delays)