Even the ancient Greeks, many of whom held the opinion that a homosexual relationship was superior to a relationship between a man and a woman, never imagined calling a homosexual relationship "marriage". Marriage can only be between a man and woman because only a man and woman can produce offspring. We have laws that govern marriage because human societies have always seen the importance of identifying who a child's parents are (DNA testing is a very recent phenomenon), and what responsibilities the parents have to each other, to the children and what responsibilities children have to their parents. We have spousal benefits, because of the fact that having children and raising them requires that certain accommodations be made to facilitate that.
Two gay men do not need spousal benefits, because they can both work. If one becomes disabled, there are disability benefits available for him. There is no need to define their relationship legally, because they cannot produce children. If they want to provide for property rights for their gay lovers, there are legal means available for them to do so.
Most people are not in favor of being mean to other people... including gay people. Most people do not think gays should be beaten up, or otherwise mistreated. However, Gay Activists are not happy with being tolerated -- they want everyone to approve of their lifestyle. But you know what? This is America, and we don't have to approve of their lifestyle... and we certainly do not have to change the meaning of marriage that has existed for all of time to make them feel better about themselves. Aside from everything else, redefining marriage will not make them feel better about themselves, and they will have to move on to some other means of being obnoxious in their never ending pursuit of the elimination of any opinion about their lifestyle that does not coincide with their own.
Read it all here.