Nor is this the type of situation that would constitute grounds for divorce under N.J.S.A. 2A:34–2(f). SeeE. v. F. , 118 N.J.Super. 491, 493–95, 288 A .2d 590 (Ch. Div. 1972) (examining mental illness, such as paranoid schizophrenia, as a ground for divorce). Although Arthur's medical condition rendered him unable to manage himself or his affairs, it did not render him unable to elect against Mary's estate.