Greek gods were often depicted with bare feet in painting and sculpture because this was a symbolic representation of their divinity and superiority over humans. There were several reasons why the Greek gods were depicted in art with bare feet:

1. Divine purity: Bare feet were often seen as a symbol of purity. The gods were considered perfect and flawless, and the depiction of their feet without shoes was meant to emphasize their purity and pristine nature.
   
2. Transcendence: the Greek gods were seen as beings who were above humans and of a higher rank. By depicting them with bare feet, their superhuman nature, and transcendence were emphasized, as they were not affected by earthly limitations such as shoes or other human artifacts.
   
3. Connection to nature: the Greek gods were closely connected to nature and were often considered part of it. Depicting them with bare feet was meant to emphasize their connection to the earth and the natural world.
   
4. Artistic aesthetics: Greek art placed great emphasis on beauty and harmony. The depiction of the gods with bare feet was often chosen for aesthetic reasons, to enhance the overall image of the depiction, and to emphasize harmony in the artwork.

It is important to note that the depiction of Greek gods in art was varied and there were no set rules. There were also depictions in which the gods wore shoes, depending on the story or scene being depicted. Nevertheless, the depiction of bare feet was a common artistic convention to emphasize the divinity and superiority of the Greek gods.