Just as a side note, I hate it when people make up "etiquette" in their mind, treat it as real rules, and get mad at you for breaking it. Unless there's good r

Just as a side note, I hate it when people make up "etiquette" in their mind, treat it as real rules, and get mad at you for breaking it. Unless there's good reason (very old person, person with disabilities), I'll recline after letting you know and checking if I don't crush anything on your side (a skull, laptop, or food). During lunch, the personnel will tell us to sit upright, anyway, otherwise the trays are unusable. There is also a chain reaction element to it. Even if originally I was sitting upright (I really prefer it this way for short 2-4 hour trips, which is most of my flights within Europe), if the person in front of me reclines, I'll recline, otherwise I'd be about 10 cm away from the other person's head, and no matter how nice his or her shampoo is, I ain't smelling it the whole flight, even if your favorite CBS travel expert says otherwise.