Spiritism is not a spirituality which overlook human beeings. It's a realist philosophy turned towards the mankind. If human worried about life after death, spirits are concerned about the future of human beeings. The messages of spirits are an information on the next world and, in a same time, they bring answers about the sense of life. So the great question tackles by spiritism concerned liberty, justice and responsability.
Spiritism has a social function.
By the light of the messages of the beyond and with the notion of reincarnation, spiritists are concerned by History, current events and the evolution of the humanity. Spiritism is a philosophy with an humanist feature, it could participate in the progress and the improvement of the societies. According to the spirits, evolution cannot take an individualist way but requires a collective consciousness. The spiritist consciousness opens to new ways in a materialist society which doesn't answer to the yearning for happyness of human beeings. The spiritist idea, well understanding, smashes the chains of all the tyrannies for the emancipation of each human beeing.