What about noise, condensation and humid summers?
Rain on metal is louder than rain on shingle, and an uninsulated or poorly vented metal roof can drip condensation on humid mornings. Winston-Salem's July average high is 87 F and July is the muggiest month. Insulation, underlayment and attic ventilation shape how a metal roof behaves indoors.
Noise is the first question most owners ask, and the honest answer is that it depends on what is under the metal. A solid deck with underlayment and attic space beneath usually sounds different from an open barn roof. On an outbuilding with no ceiling, rain will be loud and you will hear it.
Condensation is the less obvious problem. Warm, moist air meets a cool metal surface and water forms underneath, which can look like a leak. The cure is usually airflow or insulation rather than sealant, and the attic ventilation page explains how a roofer reads the difference.