I didn't hate it, but I just thought it was ok. I thought the first movie was much more subtle about everything and "distilled", whereas 2049 wallows around in concepts much more and spends too long on things. I thought Jared Leto and his sidekick were both awful, the rest of the cast were great. I didn't really love the storyline, there were parts that were very clever and compelling but Leto's motivations and plans were poorly conceptualized.
I'm glad I watched it as a huge fan of the original movie (hence the nick) but I think the movie could have been a lot better and I think the first movie is much better. Ryan G and Robin Wright killed it in this one, whereas in the first one I thought Ford, Sean Young, Rutger Haur, Olmos, Daryl Hannah, Tyrell, JF, and Kawalski were all best in class.