Gold Roger
First Post
Spellcasting is dangerous: why should damage interfere with casting magic and not with wielding a sword? I've been doing martial arts for some years (even if I'm not a professional) and I can assure you that after getting kicked hard your ability to fight is reduced until you shake off the pain, and if somebody punches you in the face you'll most likely not complete the maneuver you were supposedly doing.
Fair point.
Sadly, we have no such rl comparison for casting a spell.
But I suspect it's a fair bit harder than getting a hit in during a fight. We have the possibility to not hit (hp and attack rolls do what you describe well enough for my purposes). I think losing your concentration for complicated spells is only fair.