(1) to promote the public health, safety, order, convenience, and general welfare;

(2) to facilitate adequate provisions for public services such as transportation, police and fire protection, water supply, sewage treatment, and parks;

(3) to assist in the implementation of the Comprehensive Plan for the physical development of the city by regulating and providing for existing and future uses;

(4) to protect the character and the social and economic stability of residential, commercial, industrial, and other uses within the city, and to ensure the orderly and beneficial development of these uses by