OK, let's use the definition of marriage as a vow of commitment. So if homosexuals want to commit to one another, who is stopping them?
Perhaps gay marriage is not really about pledging a troth for life, but about forced public acceptance.
Public acceptance isn't all - they want much more than that. Public dominance is their goal. Note emerging "hatespeech" laws in other countries, coming soon here if homosexual activists and their bots have their way. We already have state "hate crimes" laws - and Kennedy and other Senators have been trying to make a federal hate crimes law including homosexuals. So if a homosexual is killed, assaulted, or whatever, it is a more heinous crime than if my elderly father with impaired eyesight is assaulted. Disgusting.
Gay activists and their helpers are not interested in partaking of holy matrimony. They want to re-make society in their image. And silence those who disagree with them. They do not want tolerance or diversity of opinion. They want to dominate and suppress. "Gay marriage" is a weapon in their arsenal. They want to dismantle the natural family as the foundation of civilization; anyone who has studied their writings knows that.
People should be asking WHY do they want to dismantle society and remake it?