Alright, I'll confess. I notice things that I wish I didn't. Once I was studying/practicing a certain religion and it was difficult because I didn't know anyone else who practiced that religion. I thought how nice it would be if I could meet someone who was knowledgeable about the tenets of the religion, someone whom I could talk to about it and exchange views. So one day, I meet a woman on the train who gets off at the same stop as me, and waits for the train at the same station I wait. She saw me with my books and said "Oh, I was raised in that faith. My parents still practice it. We started to have a nice conversation when I looked at her and noticed that she had an enormous amount of nose hair filling up her nostrils and sticking out of them. It appeared that her nostrils were completely blocked with steel wool. I couldn't stop focusing on her nose hair and it was really a turn off. I couldn't understand how anyone could live or go out into public with their nose packed full of wiry hair. I avoided her after that. I'm not proud of my behavior. It's not very charitable to reject people for having too much nose hair, it's very superficial of me, and who knows, she might have been the best friend any person could ever hope to have.