I really enjoy novels where the concept of a mage being deployed in battle is the modern equivalent of using nuclear weapons. (Mages are a last resort and highly valued in a country) also training a mage is costly and they're Scarce. Wondering if there's more novels themed around that idea? Just don't recommend me anything that may cause my blood pressure to shoot up, please. Things I wish to avoid reading in a novel MC is kind hearted Never learned how to say no Can't ignore helping others Weak willpower (never kills people that needs to be disposed of and those people keep coming to MC and give him a hard time always but they never get killed) Please avoid putting my old bones through that torture. If I keep reading such novels I am afraid I'll end up bald. Protagonists in novels lack common sense and can't find something enjoyable. PSA. avoid the usual Reverend Insanity recommendation. Thanks!
The Irregular At Magic High School fits perfectly, though the limitation is less cost and more the number of people capable of using magic. Only a very limited number actually reach the nuclear level, but they basically replaced nukes... As for the MC, he lacks the ability to have feelings (of any kind, including hate) toward anyone but his sister.
The eng translation has been licensed.. so you can buy it. For fan translation u can check the Reddit.