When we're dealing with the people in our family - no matter how annoying or gross they may be, no matter how self-inflicted their suffering may appear, no matter how afflicted they are with ignorance, prejudice or nose hairs - we give from the deepest parts of ourselves.
Historically, there are hierarchies of purity. Certain aspects of poetry are very, very pure. The lyric poem can't be anything but the lyric poem.