I like the questions and comments you all have made here regarding rhyming.
Some contemporary poets use rhyme schemes in their sonnets.
The rhymes manage to avoid a sing-song or predictable sound, I think, because the lines have a varied beat. When I write sonnet, I prefer to free up the form and dispense with a symmetrical rhyme scheme. The following poem is drawn from a series of sonnets. Out She imagines him with his hands among dishes Or carrying the frail grandfather to the hospital. Inflection changes meaning.