Hussar
Legend
/snip
To repeat the example I gave about my campaign, chain mail is the only allowed metal armour in my current 5e game (note that there is "better" chain available to replace the missing plate armour etc., so mechanically there's no change). It is part of the flavour of the setting, which wouldn't work if Knights were riding around in suits of plate armour. If a player insisted they were only happy if their fighter could wear a suit of plate armour, I would think he/she was being highly unreasonable, as it would dilute the setting just to suit their whim (it would not be possible to present any sort of alternative setting if we always bent to such demands); in my opinion players should go with the flow, as much as DMs should ensure they have good reasons before they restrict player options.
Just a question about this because I ran into this specific house rule once before in a 2e game. What's the justification for having chain mail but not plate? My old DM tried to pull the history card and claim that chain mail predates plate mail. When I pointed out that there is plate mail in the bronze age, she completely ignored history and refused to budge. How do you justify it? After all, chain mail is far, far more difficult to produce than plate.
What would happen if a different player did not want to play Dragonlance?
Don't get me wrong, I do not know you or your group. I only know what you post.
But you have posted a lot of anti-DM posts.
Your group appeased you in this case. And suddenly, you found the time to play Dragonlance when it was available, even though you were unwilling to play Planescape. I also find it interesting that you stated that you "gave it a good try" followed by "the campaign hadn't started yet". If it didn't even start, you did not really give it too much of a good try.
I believe you misread what I posted or I wasn't clear enough. The DM ran a short term Planescape game (maybe half a dozen sessions) as a primer for Planescape. That's what I tried and I did give it my best shot.
When the DM then pitched an extended Planescape game, I said that I was going to bow out.
My impression is not "all for one, one for all", but rather "all for Hussar". This is just an observation. You seem really pro-Hussar and anti-DM, not so much pro-the rest of the group.
As an example, you gave the one shot a chance, but when that particular person wanted to play DM Planescape as a campaign, you took your ball and went home.
To me, that's not the sign of a close friend. Even if I did not particularly like Planescape (which I do not), I would have played it for two or three years if a friend of mine wanted to run it. I would not have put my fun above his and the rest of the group.
I wonder if the reason you like your group is because they are willing to put up with your likes and dislikes. There are sometimes players that are drivers in a given group. You might be one of those players, someone who leads and the rest of the players follow. The very thing you complain about (the DM not listening to his player's desires) is something you did here. You did not listen to the person who wanted to DM, but decided to bail.
Just saying. Something to think about.
Funny thing. You and others keep claiming that it's perfectly fine for a player to bow out of a game that he or she wouldn't enjoy. I don't like Planescape. I think that's a pretty well established fact around here.

So, why am I a bad player for politely bowing out of a campaign that I didn't want to play in. Isn't this precisely what I'm supposed to do?
You seem to take the position that the players are supposed to accept every and all things the DM says and go from there. At what point can a player say, "No thank you, I'm going to sit this one out"?