Its fair that a woman receives alimony / spousal support payments in instances where the man makes more money throughout the course of a marriage. You can't accustom a person to a certain lifestyle then rip that lifestyle from them in an angry bitter act of revenge, just because she has found someone better than you. It takes time to adjust afterwards and spousal support helps both the man and the woman by easing the woman comfortably into her new life.
Men make more money nowadays in this sexist world anyway so its only fair. In fact I think all spousal support payments should be increased by 25% to make up for the years of income inequality women have had to suffer for far too long