Like a bunch a people here it varies from game to game. I'd like to see someone grab all 108 stars without one. You'd have to revisit every place with every team combination after every story event to make sure. Those are the only games I use a walkthrough the entire thing.

Everything else I'll use them if I'm totally stuck and CBA to figure it out on my own but that's usually for block puzzles. I'm also very stubborn about bosses. I won't go to a walkthrough for a boss until it's beaten my self worth like my little people on the TV.