Start an internet debate about anything and someone will argue passionately for one side or the other.
Isn't that the point of debate?
It's football fan syndrome, the need to have a cause you believe in.
Just as easy to say the same about obsessing over having a president (which no-one has yet to demonstrate why it is any better than what we already have).
Asking someone with this mindset about anything to consider alternatives is like asking a Man U fan to think about whether Man City might be worth supporting. Grunt, angry response, end of thought process.
For some, I agree.
For others though, don't confuse they're not coming around to your point of view than anything other than their coming to their own, considered, position.
We're allowed to disagree.