It IS an important issue because it calls into question the way the first amendment is defined. Since there is no definition of marriage in the constitution it cannot be interpreted to be solely between a man and a woman. Constitutionally, marriage is all inclusive, it has no limitations and the SCOTUS justices who stupidly question the "age old" definition of marriage need to recuse themselves out of sheer stupidity. This Supreme Court is a joke, but that's par for the course when rightists hold the majority.
your post is a study in contradictions. you first admit that marriage is not addressed in any of our founding documents, and then like most leftists, try to create something that you admit does not exist.
marriage is not a constitutional right, it is a permit issued by each state, not the federal government. The constitution leaves such things to the states, therefore, the voters of each should decide.