system
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human
[Harry Potter] How come nobody arms themselves with a bunch of medical spells? They could've come in handy SO many times yet everyone is too busy learning combat/utility spells.

Hogwarts has a medical wing, but I never understood how the students there couldn't pick up tons of medic-based spells. You'd think in a world with magic, the no.1 priority would be to learn a handful of medicinal spells/charms. Its like having a basic first aid kit....but only better since its MAGIC. 

I was just looking back at how Snape heals Malfoy when Harry used Sectumsempra on him. Couldn't Harry just ask "Hey Professor, what is this spell?" or you know, just remember it from his incantations? Would've come in handy to save Dobby or someone else injured in the battle of Hogwarts. Made me realise that in general, everyone prioritizes combat and utility spells. 

They desperately needed a medic class in their team!!
gpt
Some magic is easy, some... less so. The only background we have on medical magic is that the requirement to become a healer are two of the higher marks (Outstanding and Exceeds Expectations) in five NEWTs; Potions, Transfiguration, Herbology, Charms, and Defense Against the Dark Arts. 

Most people have an aptitude for one or two subjects, but being able to achieve that kind of level for five subjects is only attainable for the truly exceptional. Hermione was able to learn the basics, using a charm and some magical herbs to heal Ron after he'd splinched himself escaping the Death Eaters in London. 

Healing magic is also the sort of thing that seems like it could backfire with horrific consequences, so it makes sense that they don't even try to teach the basics at lower levels.