It may be difficult to obtain a second phone line for fax or computer use. Local Internet service may not be available. Cell phones may have limited range. Power outages occur more frequently in the country. Nature Wild animals can be wonderful neighbors or just plain nuisances.
Deer are notorious garden eaters.
Foxes and coyotes can threaten pets. Snakes, mice and skunks often seek shelter in or near buildings. Agriculture Slow-moving farm equipment may block roadways. Tilling, harvesting and other operations can stir up dust and pollen. Don't merely keep a house in the country while spending your time and money in some distant urban center.