I'll admit that I caved in a few times and used gamefaqs during the third Phoenix Wright game. And after I've beaten a game, I'll often browse through a strategy guide to see if there's anything I missed. But in general, I prefer to play the game without one, so that I'm eternally surprised at what's coming next.
But hey, it's your life, and games are meant to be fun. If a strategy guide helps you enjoy a game the most, more power to you!
(I'll just have a little less respect for you and your noobish ways...Just kidding)