It may have helped to get rid of that stupid 'I wasn't descended from monkeys' rubbish. In fact we share, is it 98% of our genes with them? But the descent is not from monkeys but that we share a common antcestor, and we also share an incredibly high number of genes with a fruit fly as well. Such certainties, whilst they would not have dented the belief of the welded on creationists may have given pause to some of the more rational amongst them as it forms some sort of scientific basis for the argument for evolution that in my opinion is unassailable.