Royalty

The fundamental problem is similar to that of religion, if you grow up accepting something and being told things by those around you, then you may not ever question it rigorously. It becomes more of a faith based set of beliefs rather than a reasoned one. Then, when others question your views you find yourself lacking the answers and choose to get personal with those who are asking the questions.

It's fine to have faith based beliefs. Just don't try and then argue in a reasoned debate based on faith. It's what trips up most religious people too. Logic is a trap for faith, and faith cannot stand on the same ground.

The flipside to that is that faith is a trap for logical people... you could've conceded the faith based element to being a Royalist, and thus infuriated all of those attempting to use reasoning.

repost^

It's emotional rather than cogent reasoning
like belief in god