These regulations shall be designed to lessen congestion in the streets; to minimize risks from fire, flood, panic or other dangers; to promote health and the general welfare; to provide adequate light and air; to prevent overcrowding of land; to avoid undue concentration of population; to make provision for, so far as conditions may permit, the accommodation of solar energy, systems and equipment and access to sunlight necessary therefor; and to facilitate the provision of public requirements, such as transportation, water, schools, parks, sewage, etc. These regulations shall be reasonable, assist in conserving the value of buildings and encourage the most appropriate use of land throughout the Town.