Horse on asphalt without shoes = disaster. Hoof wears down in a week. Horseshoe — steel protection. Changed every 6-8 weeks.
Process
Farrier visits the farm. Horse stands, tied. Farrier takes the leg, removes old shoe, trims hoof (like nails — painless), fits new shoe on the forge, nails with 6 nails. 4 feet — 45 minutes.
Cost
$25-40 per shoeing (all 4). 8 times/year = $200-320. For a horse covering 3,000-5,000 miles/year — pennies.