i'd go just for the experience because i'd always be wondering! but if you do, then go in the frame of mind that what they are saying means nothing.
I went to one just for the experince and I had to ask her about the 2 most important subjects i wanted to know about, and her answers were exactly what I wanted to hear. But i asked her so of course she is going to make the answers light and happy isnt she!!
although one thing she said about was that I should check the front lights on my car, and she was right because no matter what car i have the bulbs keep blowing on my fogs!! I still dont believe it though and cant really remember anything apart from that which she told me!