Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Context: I (18 y/o) suffered an accident about a month ago, and part of my recovery is to walk a lot every day. I take a cane with me just in case, through I'm not visibly disabled and walk pretty well, though I get tired after walking a long way. A few days I go, on return trip from my walk, I was tired and a bit hungry, decided to stop by a Burger King. 

As I was going through the doors, I wasn't paying much attention, mostly from being tired and lost in throught about something else, and a stranger that was exiting just before I was entering held the door open for me. I didn't acknowledge him or say thank you, see being tired and lost and thought, but I still recognize that I was rude regardless.

After I passed, I only realized that the door was held open for me because the helpful stranger said *"You're welcome"* in a quite annoyed way after waiting for my "thank you" that never came, and he left. At the time I felt pretty bad, only then realizing my mistake, but then I got annoyed that the stranger seemed to be offended that I, a tired young person walking around with a cane, didn't say thank you, and decided to voice his offense in a snide "you're welcome"

This is probably an incredibly insignificant AITA post, but after thinking about it I really want to know what y'all think. Who's more of an asshole, me who didn't say thank you, or the guy who gave a snide "you're welcome"?

not saying thank you to someone holding the door for me