>>4227434Well, you do have biological responses to the external environment unless you've got a really strange disease that I don't know. I am pretty sure that if you stub your toe somewhere you'll feel pain. That is something that you can measure and evaluate how beneficial it is to your life. But what you're talking about clearly isn't that, you're talking about how activities that you do don't bring up any joy to yourself, as if you didn't have hobbies or anything. Maybe an explanation for that is the same as in addiction, you keep doing something over and over and everytime it's less and less rewarding. Probably that. I don't know, that makes me feel more confused.