A hundred years ago he would be at church praying to god for a cure every day. He has replaced that with AI, the effect is the same. Looking for a solution/cure for when medicine has failed.
not to mention that "failed" implies that somehow death is not part of life. sure, going when we prefer would be better, and our descendants eventually will have this in some shape or form (digital uploads and backups and whatnot), but for now we have what we have.