I have one and have had to revise twice by time I was 26. Father passed away when I was 24, brother when I was 26. Bummer times two I know. Quality over quantity. Having those life experiences changed me as a person and doctor. what we see Pt's and their families go through when death is imminent and no one has made clear what their wishes might be reminds me of how grateful I am to know my wishes are clearly stated on a legal document and to my family. Get it done!