Funny, I enjoyed this series. Though, I admit, not at first. The prospect of an incoming alien species colonizing the Earth by frustrating any ability to continue our advance in technology, then figuring out a way to defeat them anyway was compelling.
Further, it helped me to think of it as my first novel told by a Chinese author. Cixin Liu's sci-fi voice is very different to what I am used to. All of the motivations and norms are different. So, I tried to keep an open mind.
Finally, I thought that the Dark Forest made the biggest difference in my understanding of the 2hole story. The reveal in that book stopped me in my tracks. It caught me as hard as the one in Ishiguro's Never Let Me Go. No spoilers.