I wondered at times back in my DM days if you could have an actual medieval type place, if there was a kingdom in a big magic-dead zone; no mages, no spell-wielding clerics, no magical monsters/outer planar critters, etc. It later occurred to me that while peasants would love such a place, the higher ups wouldn't, and would constantly be leaving the place to get magical healing, etc....
I don't think the pesants would be too good off from it either. Without clerical magic famine and plague come back in force.