Is divorce bad? Yes, does it harm children, yes as well as other close to the family.
Is it against the law, no, but it is against the teachings of several churches.
Is Marriage a government thing, no, should it, no. It is a church thing.
The gay marriage issue is about money. Taxes and inheritance. that is all. Homos already have equal rights as any straight.
If inheritance taxes weren't so high (to redistribute the wealth), would they have anything to bitch about?
Do they believe that God thinks that two men living together are "living in sin" simply because they are not married?