Christians are not killing marriage. The devil is. That is his mission, to " steal, kill, and destroy" According to research ( google this), even homosexual married people live an average of 24 yrs. shorter than heterosexual married people. Research done in Denmark, that has had legal gay marriage the longest (1990) has shown the following numbers.
Heterosexual married men-74 yrs.
Heterosexual married women-78 yrs.
Homosexual married men-51 yrs.
Homosexual married women-56 yrs.
A similar study was done in Sweden with nearly identical results.
Standing agaist gay marriage is loving gay people. Because we want them to live. Standing in favor of gay marriage is standing for death and the mission of Satan. Divorce is another tool of the devil. Out of wedlock birth, cohabitation, swinging, and numerous other things that hurt marriage are also the work of darkness.