"What goes on between consenting adults is their own business and they should have the right to marry whomever they wish."

Why does the government need to endorse it?  On one hand you want "what goes on between consenting adults" to be their business.  On the other you want the government to endorse it, support it, change other institutions to include it.

Marriage is marriage, why must the gay lobby insist on changing it to fit their vision, and forcing everyone else to accept it?