Gay marriage will, among other things, erode a fundamental institution, namely the family, because marriage often is about children.

ECONOMIST: Letters | The

Now that really would threaten a fundamental institution of civilisation.

ECONOMIST: It rests on equality, liberty and even society

But all of us have to have the humility to accept that public confidence has been shaken and the battered reputation of this institution cannot be repaired without fundamental change.

BBC: In full: Constitution proposals

If you are a long term investor as an individual or as a fiduciary for an institution, I would recommend closely following the drama addressed above, but not to change fundamental investment strategy.

FORBES: Briefing Book: A. Michael Lipper