I am always amused by at people who are incensed when people ask them to move their bags off a seat on a train or bus. Did you buy an extra ticket for you bags? No you fucking didn't. You bags are not entitled to a seat. I HATE travelling backwards on a train, and it makes me feel queasy. If I HAVE to I will (OBVIOUSLY) but I prefer not to.
I am certainly not going to travel backwards when a front facing seat is available, but just has some entitled-to arsehole's bags on it. If they refuse to shift them, I WILL remove them myself.
Anyone who says 'I don't get queasy in a car or facing backwards on a train, therefore no-one else possibly can' is a fucking asshole. 
@RebeccasSlicker
I read somewhere a theory that it's to do with your inner ear getting confused by the scenery whizzing past in the wrong direction - no idea if that's total bollocks but I do tend to feel better if I close my eyes and put music on.
Pretty much it yeah; it's the disorientation that makes people feel queasy. Pretty obvious really!
@hotbutteredcrumpetsandtoast
No, its just that it doesn't make sense. Someone gets travel sick in the back of the car but is just fine in the front, where they coincidentally get more space, more leg room, don't have to sit next to anyone....aye, pull the other leg, its got bells on. There's no reason why you'd puke in the back but not a foot further forward in the front.
Don't talk such shit. It's got fuckall to do with 'having more room in the back!' Who the hell do you think you are? Calling people LIARS who say they feel sick facing backwards on a train, or in the back of the car? For fuck's sake! You have NO idea how every individual person feels, so stop chatting fucking shite! 
Re the post by @Xeneth - I also laugh out loud at the people on here pretending to be doctors and suchlike. Yeah right......... 
I have one question for the naysayers; why the FUCK would people make this up? I bet you tell people with depression to just cheer up as well eh? And people who struggle with their weight, to just 'eat less.' 
Loving the poster whose bag needs a seat but finds people with a predisposition to travel sickness precious..
This ^ What kind of entitled-to asshole demands a seat for their fucking BAGS?!