In day camp in Brooklyn, we always had woodworking. In successive summers, we had an instructor who wanted us to round the corners and edges of everything, and another instructor who insisted we keep everything as square and sharp as possible.
Context matters, as usual. Sharp corners in soft wood can easily get dented and look bad if they are on the edge of a table or cutting board. But if two corners are going to meet they'll look better if they are both square.
