Grounds for an annulment cannot be found in such matters as character, habits, chastity, business or social standing, financial worth or prospects. (Millar v. Millar (1917) 175 Cal. 797; Hardesty v. Hardesty (1924) 193 Cal. 330; Vileta v. Vileta (1942) 53 Cal.App.2d 794; Irmo Liu [(1987)] 197 Cal.App.3d 143 [wife married husband in Taiwan to acquire a green card and never consummated the marriage]