Food is one of the most fundamental parts of our existence, which perhaps makes it less than surprising that it's a cornerstone of most cultures and an art form that people dedicate their whole lives to perfecting.
And when something inspires that much passion, it seems inevitable that it's eventually going to start some explosive arguments. Whether it's because a diner refuses to expand their palates at any cost or a cook is unwilling to accommodate a specific restriction, it's pretty easy for fights to start over food and just as easy for those fights to blossom into debates involving other people.
And from the looks of it, it's hard to find a better example of this phenomenon than in the aftermath of one nightmarish Thanksgiving dinner.