Characteristics of use which were lawful before the Borough's original Zoning Ordinance of 1978 was passed or amended, but which would be prohibited, regulated or restricted under the terms of this chapter or future amendment. Inasmuch as these nonconformities are, by definition, alien to the character of a district created under this chapter, it is assumed that the ultimate ends of this chapter will be accomplished if these nonconformities are permitted only until such time as they are terminated in time by obsolescence, destruction, abandonment or similar factors and thereby the objectives of these zoning district classifications will be achieved. Because nonconformities, so long as they exist, prevent the full realization of the objectives of this chapter, it is the intent of this chapter to restrict, rather than increase, such nonconformity and to eliminate such uses as speedily as possible.