Why is it???

Had a conversation with my son today, that left me wondering...Why is it, that the things that we remember the most, about the way people treat us, and how they interact with us; Why is it, that the things we remember most and more quickly than anything else, the bad stuff! It is human nature, I think, to see and hear the bad things,people say and do, before hearing anything good that they might do or say. We also remember the bad stuff longer, and more frequently than we do the good stuff. Why is that? What makes our minds work that way? Why can't we examine things clinically, logically, before we automatically jump to that all encompassing statement "all you ever do is tell me what I do wrong!" Knowing full well, at least some where in the backs of our minds, that this statement is not entirely true! WHY DO WE DO THAT??? Don't get me wrong either, I am not pointing fingers at everyone else. I am just as guilty as anyone! My mind often jumps, in times of offense, to the mind set of "well, you did, or you said" even if the thing that I am thinking of was a long time ago. My quandary, is why do we as people do this and how is it that we might over come this tendency to want others, to feel as picked on or insecure, as we do at that given moment? I really want to know. This is in the forefront of my mind right now because of Ford, and the conversation I had with him this very afternoon. Telling him, he was not going to just go to work and sleep! There was more to life than that, and if he can't obey that rule of my house then he needs to go somewhere, where I won't be there to get on him for that. Thus, making him very upset with me, to the point that he said and I quote " I am done with this conversation! All you ever do when you talk to me is make me feel like shit! Well, not ALL the time, but mostly." Both of my kids have laid this guilt trip on me at different times. Mostly since they have been older, that is for sure. Why is it though, that they can't seem to remember, any of the good stuff, why something wrong is pointed out? I know that NO ONE likes to be told they are doing things wrong, or incorrectly, but at some point, you would think, that if they truly don't like the things being pointed out, that they would finally take some stock in what is being said, and do SOMETHING to change it. At least that is how I see it. It is for sure not an easy thing, and it takes lots of work. Sometimes a life time, but why else are we here, but to learn and improve ourselves? I hope that there will come a time in my kids future, they will be able to see that Through out their lives we weren't just yelling at them and picking them apart. I hope we were helping them to become better people. Better husbands and wives. I hope anyway.