Things I believe in the core of my being...
You don't put ketchup on a hot dog. One of the most depressing indications of the decline of Western Civilization isn't just that more people, even here in Chicago, are asking for ketchup on their dogs, but that so many formerly pure hot dog joints are fulfilling this request. A real hot dog place will refuse to pollute a fine all-beef wiener like that, and I honor places like Gene & Jude's that uphold that noble tradition.
Second, I literally can't believe any sane person supports the abomination known as the Designated Hitter rule. The American League can win every single championship from here to eternity, and I will still never think they are playing actual baseball. It's like the difference between football and arena football. A White Sox fan accused me of hiding behind this "old argument" to cover my bitterness that the White Sox are playing great ball and the Cubs just completely and utterly suck.
Well, believe me, it does stick in my craw, and if the Sox do to the World Series this year I will feel a burning shame like nothing I have ever experienced. Such a horrible thing could not happen. Surely the Universe would not allow it. (And on a side issue, I have nothing but contempt for people who aver to be "fans of both teams." Shut up, you unclean loser.)
However, the fact remains that the White Sox play in a false league. As an analogue, us Protestants also still advance "old arguments" about the validity of the Catholic Church, too (and vice versa), but that doesn't invalidate them.