Almost every animal has a simpler, easier life than the average human.
Penguins have a far easier life than the fish they eat. I feel sorry for the small fish; everyone is after them; big fish, sea gulls, octopuses, pelicans, penguins, dolphins, seals, humans... What creature on this earth does not eat herring or sardines? Humans even started feeding their ground up bones to chickens and other farm animals (who would otherwise not eat them)! Give the sardines a break!