davidpatricklawyer wrote:Is it rational to be committed to one's own country above all else,
Strictly speaking, no; although you can substitute any group type for "your country" - even
humanity, or even
sentient beings (anticipating any future discovery of ET here) and it wouldn't be any more rational. (actually, I find it irrational to be devoted to
life above all else as well. Even the act/sentiment of
devotion itself is likely irrational, too).
davidpatricklawyer wrote:... and is it rational to think that your upbringing is the "correct" way?
Rational and
correct are two different things.
The Ptolemeic model of the solar system, including its model of celestial spheres on which the planets were supposedly attached, was rational. However, later observational evidence showed the model to be incorrect. So too was the 19th century notion of "ether" pervading the universe, which supposedly transmitted light waves (on the grounds that air was the medium for sound waves, water was the medium for..well..water waves, so light must have a medium to carry it too). That also was disproven by the Michaelson-Morely Experiment. Similarly, it was rational at the time of the trial (1980s, before our present DNA analysis techniques) to suppose the accused did commit "the rape", even by the lights of the cliched fair and impartial juries.
As you can see, rational argument are not immune to assumptions based on ignorance. There's always the possibility our presently-accepted models are wrong.
davidpatricklawyer wrote: Is it rational to be loyal to one's family simply due to the bias that they themselves instilled in you?
It does have its own rationale, but one based on a bias. Again, rational does not mean correct. Example of a rational argument that is wrong.
1. New Orleans is in Wisconsin.
2. Therefore, if I'm in New Orleans, then I'm in Wisconsin.
3. I'm in New Orleans.
4. Therefore, I'm in Wisconsin.
This is rational in that the conclusions flow directly from the claim. However, the obvious problem is that the claim is wrong. Therefore, the conclusion is factually wrong despite it being the logically correct conclusion of the premises.
Likewise, merely assuming loyalty to one's family can lead to some rational conclusions but not necessarily correct ones.