Is AUTHOR wrong in the post ? POST : This happened three weeks ago, and was almost the final straw in a weakening friendship with a best friend. 

Him, another best friend that we made our freshman year, and I went on an adventure to a lake. He offered to drive us. His car is fairly old, and has definitely seen better days when its parts were newer. I am one to try to slam the car door, to ensure it is closed. He asked me to be more gentle with closing his car door and to not slam it. He said that I have apparently been told this before by him on one or two occasions. I honestly do not remember being told this, but I'll take his word for it. I brush it off and don't think too much of it.

We made a few extra stops before arriving at the lake. The second time we get out is where I mess up. I absent-mindedly slam his car door again, and I get called out. I apologize and tell him that I will try to be better about it. He asks how I would like it if he slammed my car door. I told him that I wouldn't care much as long as it didn't break anything.

The adventure continues, and it was fun. We get in and out of the car a few more times (~8), and I do make a conscious effort to try to be more gentle with closing his door. Finally, we arrive where I live, so he can drop me off. However, on the last time that we exit his car, I accidentally slam it. The friend doesn't say anything. Wr go up to my room to hang out for a bit. I open the door to my room, and my friend beeline for my desk. He starts opening and closing one of my desk drawers repeatedly with enough force to break it while looking at and smiling at me. I was in shock. It took a few seconds before I told him to stop and put my leg in front of the drawer to prevent him from opening it. My friend is bigger than me, and easily me out of the way, and continued breaking my drawer. He told me to ask him to stop. I did, and he kept going. I asked again, and he finally stopped after be had broke the drawer by ripping the front of it off, and then laughed at what he had done.

I was furious at this point, and he told me that that is what I deserved for slamming his doors and that what I was doing was causing damage to it. I argued about how what I did paled in comparison to what he had just done. I said that what I was doing was causing either normal wear or slightly above normal wear. He told me to look up the how slamming car doors is bad for the car. The results I found leaned towards slamming being either neutral or does cause damage over time (which is about what I thought). He used the argument that intent has no impact on something, only the end result. I feel like what I did was out of instinct (albeit not a great one) and overall good intention (making sure the door was securely closed, rather than potentially open), whereas his intention to teach me a lesson felt out of spite and malice.

In the end, unless I was not told something, his car door works just as fine as before.

So, AITA?