I felt the same way the entire game, I never have hated a main character so much. I couldn't understand why Aiden was so upset with the consequences of his actions. He was a bad guy, and it finally caught up to him. Because of Aiden I pretty much hated Watch Dogs. It wasn't fun.
I agree, the Mass Effect series was by-far by favorite series for the last generation. I enjoyed everything about them, except maybe ME3's ending, but whatever. The games and universe BioWare created were something special that roped me in.