To the OP, Ritual Spellcasting is a niche item. You are right that it is useless in combat. Or in most quick-time runs. When a run goes longer, though, or you're tasked with running someone down, or you need to do a spell with a big whammy, then it is very useful. So for many magicians, especially those dealing with R&D and other such things, it does have its uses. They just don't lend themselves to running.