I really want to lock this thread, but that's probably because I'm a bit grumpy and just woke up and am easily irritated at the moment. All-in EV is just there to show you what your Sklansky Bucks are in all-in situations with cards left to come. It has its uses, but is obviously not the end-all of deciding if you've ran good or bad or not. Over large samples, it can help you decide if you're actually beating the game or not, and there are other uses as well, but I agree that it can also be used in negative ways.