After spending any amount of time exploring Skyrim you'll quickly realize how dangerous the land is. When having to make decisions of how to protect yourself it seems to me that wearing armor is a much stronger choice than wearing robes which offer no protection.
The robes I find are often enchanted, which is a big boon, but the articles of clothing can easily be disenchanted and the enchantment can be copied over to armor instead. When thinking about this, the only utility I can see enchanted robes having is a naturally high sell value compared to armor.
What benefits do robes have over armor? What would make me sacrifice my armor in favor of cloth?