I like games with choice, I like games without choice. Linear games like Halo and Call of Duty are a blast as much as "choice" games like Mass Effect or Oblivion. If you play a linear game you get to experience the message the way the creators want you to. If you play a choice game you get to experience the message in a few ways the creators want you to. However, most choice games only offer different dialogue options or decisions which result in minor changes or different endings. Sandbox games are the only real "choice" games because you can choose to do whatever you want.