The purpose of this bylaw is to lessen congestion in the streets; to conserve health; to secure safety from fire, flood, panic, and other dangers; to provide adequate light and air; to prevent overcrowding of land; to avoid undue concentration of population; to encourage housing for persons of all income levels; to facilitate the adequate provision of transportation, water supply, drainage, schools, parks, open space, and other public requirements; to conserve the value of land and buildings, including the conservation of natural resources and the prevention of blight and pollution of the environment; to encourage the most appropriate use of land throughout the Town, including consideration of the recommendations of the Master Plan, if any, adopted by the Bellingham Planning Board and the Comprehensive Plan, if any, of the Metropolitan Area Planning Council; and to preserve and increase amenities; pursuant to Chapters 40A, 40B, and 41 of the Massachusetts General Laws as amended, and Article 89 of the Amendments to the Constitution.