Of course this stuff is absolutely unpractical. But it's fantasy, you have living skeletons throwing fireballs at dragons while medieval peasants in peril write notes about their despair to the local priest who calls down the wrath of the god of justice at the goblins and brigands who harassed them. Realism really ain't something to look for. If I find anything really jarring is how 95% of fantasy, even "realistic" fantasy, gets weapons completely wrong and, for example, has sword which should rather fall apart than hurt anyone. But I don't mind that because it's FANTASY!, so why should I be picky about it? If we're realistic, let's be realistic and let's do medieval, if not, then why bother with functionality if the very idea of the setting is dysfunctional from the get-go?