Exporting Massachusetts

The Globe reports that new Senate President Therese Murray, (D-Plymouth) supports repealing the Massachusetts law that prohibits the issuance of marriage licenses to out-of-state homosexual couples if their home states would not recognize the marriage. Why? If the home state doesn't recognize it, what purpose does it serve, other than to generate test cases to be exported across the country? Surely the catering and wedding planning industry can't be that powerful - that the Senate President advocates for the repeal of a law solely to boost it's bottom line.