Great post!
I find myself being "pushed off" marginal hands because of my being a passive player...I can usually make it to the money but only just. Im trying to learn when to be aggressive.
I think the odds charts have a certain value, though..to let the beginners (like myself) know when to throw something away that "looks" marginal but due to position, pre-flop raises, etc. is a good hand to hold on to.
My two cents worth,
birdman