Death
Death maintains an absolutely unblemished record of 100% participation across all demographics, species, and geological eras. From the Archaean eon's first single-celled organisms to today's most privileged billionaires, not a single entity has successfully opted out of this arrangement. The mortality rate has remained stubbornly fixed at one per person since life began approximately 3.7 billion years ago. Even the immortal jellyfish Turritopsis dohrnii eventually succumbs to predation or disease, making death's universality truly comprehensive.
Love
Love's coverage, whilst impressive, contains notable gaps in its distribution network. Approximately 28% of adults report having never experienced romantic love, whilst studies suggest 15% of the population identifies as aromantic or experiences significantly reduced romantic attraction. Furthermore, love demonstrates considerable species bias, with meaningful expression limited primarily to mammals and certain bird species. The Greenland shark, living up to 400 years, appears to manage quite adequately without romantic entanglement.