FAKKIR.XYZ | JURNAL – Altruistic volunteers are either not truly altruistic or not rational, according to traditional economic analysis. They are not altruistic if they volunteer to receive a utility benefit, and they are not rational if they choose to volunteer when monetary contribution would be more efficient. Economic man is a fool to volunteer. However, socio-economic man is shrewder. Socio-economic man is moderately deontological, path-dependent, nonmonetary, nonrationally motivated, and community-minded. This paper explores corresponding elements of socio-economic rationality that allow for rational, altruistic volunteers. The five elements around which I structure this paper are: 1) nonconsequentialist reasons; 2) constitutive choices; 3) pricelessness; 4) nonrational motivation; and 5) community preference production.