People have very strongly biased view against existence of magic bullets - most of the worst problem we historically had had been solved with a magic bullet. However - because the magic bullet solved them so well, the problems don't seem to have ever been that bad from today's perspective, and therefore magic bullets seem much less significant than they were.

An average person in let's say Medieval Europe's had biggest problem like:

• risk of food shortage - magic bulletted with fertilizers
• frequent epidemics - magic bulletted with clean water
• death in childbirth - magic bulletted with basic hygiene
• constant warfare and raids - magic bulletted with modern state
• local banditry - magic bulletted with modern state
• loss of housing due to fires - magic bulletted with building codes

If you start from a list of most serious problems, you'll see.