To all you people who wish to "stand above" the people who are behaving inconsiderately:
You are major contributors to the problem. Every time you allow these people to "get away" with their behavior you are teaching them that the behavior is acceptable. While it might be ok if you were always stuck next to the offenders and therefore the only ones who have to be affected by them this isn't the case. You will never see them again but you pass them on to the rest of us which makes you equal to the very people you are pretending to be "better than"...