In an age that prefers to look away from mortality, a quiet generation of young adults is beginning to look directly at it — not with dread, but with care. Erin Atkinson, a 27-year-old researcher in London, has already written a will, naming beneficiaries for her car, a cherished necklace, and a charity close to her heart. She is among a small but growing cohort challenging the assumption that estate planning belongs only to the old or the wealthy, discovering instead that a will is less a document about death than a letter of love to those who remain.