If it were up to me, let it be a kinetic novel, whenever I can I use the walkthrough so that my mood doesn't get interrupted by choosing "bad decisions."
if its a game with a non linear story, multiple paths or where you have to meet point requirements to get the scenes i only play with walkthrough. if there is no walkthrough available i dont play it at all. i hate to try different dialoges where you dont know what requirement you have to fullfil to get the scene.
I also prefer walkthroughs, usually because the dev's thought process is absoloutely crackers and you never know what rabbit hole that decision is going to go down. I also don't like bad ends, unless they are hilarious like School Days.