Collective housing aims to simplify everyday life through shared common spaces and facilities while promoting sustainable lifestyles. Sharing items like tools, workshops, and subscriptions across 15-40 households can save 10% of normal private space usage. The Stolplyckan model in Linköping includes 184 apartments divided into staircases, 2000 square meters of common space, and municipal child and elderly services. Collective housing traditionally appealed to well-educated 1940s workers and families but now includes a more diverse mix like single mothers and seniors. Individualism may reduce health by limiting social interaction, while communal spaces can foster local tasks, organization, and economy for improved well-being.