Where do you draw the line???

There are many interesting threads here about innumerable topics where people share many different opinions. If the truth be known I think many of us are still open to suggestion or opposing points of view regarding most things, but there must be some issues about which we are unwilling to budge.

In your own mind what is the concession you are unwilling to make?

For example; many people feel tubes are superior to solid state equipment. I have owned tube gear, and have several friends who I respect that still own tube gear, but I will not concede that solid state equipment is inferior to tubes.

Another concession I cannot make is the superiority of CDs to vinyl. I have a good CDP and have listened to better than my own, and in my experience LPs still are the hands-down winner for sound quality.

I have and like Krell equipment, and have been taken to task because of it. I'm still not selling it to buy another brand.

The question is: Regardless of the opinion of others what views or opinions are you unwilling to change???

Lets not fight! This is supposed to be fun!!!