Why can people only imagine building communities around religion and family? There are other options available that don't tend to be so hateful towards people t

Why can people only imagine building communities around religion and family? There are other options available that don't tend to be so hateful towards people they don't understand. For example, Epicurus proposed living in communes with friends and that seemed to work well. https://www.youtube.com/watch?v=Kg_47J6sy3A https://www.youtube.com/watch?v=Kg_47J6sy3A