Never liked it to the point where it felt interesting,tbh. The animation and ost were the only thing that got me hooked with it. It's over-rated in my opinion. And the plot,let's see, soldier's kill titan to free humanity,losing life in process of obtaining military gain to discover the truth about titans,find the govt. itself is involved in the shit which happens to be their superior,and the key to everything happens to be with the main char.'s father.
Now leaving titans behind where did I read the similar sounding plot story? yeah,it's like fma.
On top of that the main char. a douche with ****ed up ideology ~ "In order to kill the monster, you have to become one",the **** did you kill the monster for then? And he does it by killing more innocent civilians in the process of saving few and defeating the titan ANNIE,which seemed like she was trying to save them more than him.