Don't fall for it!

Due to being sick for the past couple of weeks, I haven't been able to play my Wii Fit. I'm hoping that I'll be well enough to pick it back up this weekend. In my weight-loss misery, I wallow in commercials for diet pills or other "This will make you thin now!" crap. I know better than to actually consume any of these products but somewhere in the back of my head, a little voice goes "Hey! This might actually work!" before I have to beat it down. I really wonder how many people fall for the appetite suppressant shots or the other insane products. There has to be someone buying it, right? Why?