Shield corners and edges from dings and damage as frames can always be replaced; Artwork cannot. More importantly, framing adds extra support for the stretcher bars to avoid warping.
Gallery wrap canvas is cool but consider a few reasons to frame art:
Framing art can be a powerful too to establish style and craftsmanship around the art itself as it's a powerful tool for drawing viewers in to completely immerse themselves into the painting.
Framing Corner Samples
More Styles & Options Available by Special Request