For some reason you seem to ve stuck in this noble + army vs. lone spellcaster mindset.
Why wouldn't the spellcaster have an army?
Because, as already granted by others, magical knowledge requires time to develop. Ruling classes do not. Almost as soon as you have settled existence--which is required for all casting traditions except Warlock and Sorcerer (and
maybe Druid)--you have class distinctions and rulers. In order for an actual "we focus on studying magic" class to develop, you need to
already have a relatively stable, steady society, because it takes a LOT of time to become a truly powerful spellcaster.
He would in many cases have a bigger army as more people would swear to follow the person with actual superhuman abilities who is clearly destined to lead and rule than the guy who could be from next door and only says that he is special.
You have not actually defended this; you are just asserting, yet again, that having spellcasting is simply, always, universally superior in all ways, and that's
simply not true. Unless and until you actually
defend that the spellcaster is obviously superior, you are making a circular argument: spellcasters are superior because spellcasters are superior, so obviously spellcasters are superior.
What you fail to understand is how important legitimacy is for monarchies and what great lengths they went to appear to be better than common people and to their subject nobility with ever more elaborate court rituals ect.
Not at all. I understand that quite well. I also understand that
spellcasting does not automatically guarantee legitimacy. In fact, it may cause a serious
deficit of legitimacy! It's absolutely not an unequivocal ticket to eternal legitimacy.
People did not follow kings because they just inherited a title and thats just the way it us, they followed them because they believed god wants them to rule or that they are literally gods themselves and no normal person.
Uh...actually, I hate to break it to you, but..
.that's actually exactly how vassalage came to become the dominant political situation in medieval Europe. The "divine right of kings" stuff only came centuries later. (Warning, that linked blog post is a bit long, but it's actually really good, and written by an actual professor of history!)
Rome had maintained a large and complex bureaucracy by having a large and broad educated middle-class that could fill such positions. However, as the Western Roman Empire collapsed, the stability and interconnectedness required to maintain such an educated middle class disappeared, meaning when it finally fell apart, there was a dearth of actual administrators to manage society. Regional leaders--warlords who set themselves up as "kings"--had to default to
something, so they went with the
comites (singular
comes, pronounced "co-MACE"), from which we draw the modern word "count" in English and "comte" in French. Literally, the "companions" of the warleaders. And then the
Missi Dominici ("Lord's Envoys" or "Ruler's Envoys") ensured that the
comites actually adhered to the king's commands. Except...the
missi ALSO declined in power as the early post-Roman kings started to weaken and lose direct control of their territory. As a result, the vassalage system
literally was a matter of "this is the person who inherited this title and that's just the way it is."
And if someone lost this legitimacy there were "klingon promotions" by lords installing someone differently or there being mass rebellions.
Except...that didn't happen nearly as often as you're claiming. Like, that should have happened the
instant there was a stronger claimant, or a weak ruler, or whatever else. And....it didn't. Repeatedly. You almost always had actual conflicts resulting in
wars of succession rather than everyone defaulting to one ruler or another. Further, subjects outright abandoning a weak ruler simply because the ruler was weak? Never happened. Your description of medieval history is simply
completely inaccurate.
And in a magical world a priest jzst saying that god wants it doesn't cut it. Its much more convincing when the person who claims the right to rule over others posesses superhuman abilities.
Again...that only cropped up
after vassalage became the default organization system of Europe. So you're literally talking about only
after the rise of a mundane aristocracy, adding in this need to appeal to religious authority.
Besides....there are quite openly interventionist deities. Which is why I dismissed "deified kings" much earlier in the thread. Gods can very quickly tell you whether your deified king is actually deified or is just a dude who knows some nifty tricks. That's gonna put a pretty major damper on people claiming such specialness.
And that is, among the obvious reasons for personal power, why nobles would seek out to be spellcasters. It sets them apart from normal people and underscores their right of ruling over them.
Again: you haven't actually defended this. You've just asserted it, and then worked from that assertion as though I should simply accept it because it was asserted. That's not an argument.
And the more that happens and the longer it goes the more it is expected for a noble to be a spellcaster as otherwise there might something wrong with him.
This is just repeating the slippery-slope argument from above. Unless you can actually
back up the inevitability of this progression, there's no reason to accept this argument.