The General Assembly hereby finds and determines that insurance protection is essential to the proper functioning of political subdivisions; that the resources of political subdivisions are burdened by the high cost of and frequent inability to secure such protection through standard carriers; that proper risk management requires the spreading of risk so as to minimize fluctuation in insurance needs; and that, therefore, all contributions of financial and administrative resources made by a political subdivision pursuant to an intergovernmental contract as authorized by this chapter are made for a public and governmental purpose, and that such contributions benefit each contributing political subdivision.