Think of the stimulus to the economy should gay marriage be approved.
ANY marriage, gay or hetero, invites the possibility of divorce. Face it, divorce lawyers, like sharks in the water, are PRAYING that gay marriage goes nationwide. What an explosive BOON this would be to any portion of the economy attached to the divorce industry.
Personally, on a religious note, I do OPPOSE gay marriage. But, I fail to see ANY divorce lawyer opposing it. Sharks enjoy the blood of the wounded, and gay marriage would certainly compound the availability of the near-fatally wounded.