If you don't mind not going all light side you could consider turning off (or ignoring) the alignment prompts and picking the option that feels best (even if it's just the least bad of several bad choices).
This has been my philosophy for playing as well. LS/DS options are fun but are just secondary how my character acts, (or how I would imagine them to)
I totally see the OP's point though, I found many "good" choice were only good by comparison to the dark side options.
Killing him is bad.........but accepting a bribe is good! Where is the logic there?