While I agree with many other's about PS's attitude on the topic making discussion difficult, I do want to discuss this idea sol presented, because I do think this idea is worth exploring.
Now I haven't fully thought out this answer and the consequences, so it may be ridiculous, but I figured I'd type it up and we can hash out if it's dumb or not.
Although in general I want less government, and it may be better if they didn't get involved in marriage (and, for the record, I think they should give a marriage certificate to any two people of legal age who want one, regardless of gender or anything else), I think I'm okay with them issuing marriage certificates (again, they shouldn't be choosing who gets one, just granting them when asked).
Here's why.
-snip-
See, now this I can sink my teeth into and discuss. I think you're perhaps on the right path here, but let me perhaps present a similar yet alternate proposal.
I believe it would help to properly frame what we're truly discussing first as I believe we're dealing with two reasonably distinct issues. The first being that of the cultural function and necessity of partnering, or marriage, if you will. The second being both the preservation of the individual's rights within the legal system of the individual's nation-state and the necessary legal protections needed to allow for a joined partnership within that legal framework. Utilizing the label of marriage for both only confuses the subject.
As Sol has pointed out in a fashion, legal divorce is not so much about the dissolution of a marriage... it is the removal of rights and financial dissolving of a legal entity. This means that legal marriage at its core is primarily the legal unification of financial assets and durable power of attorney over one another. Although these items are logical and necessary outcomes within modern society, neither of these legal functions have anything to do with cultural and biological marriage. Marriage is the act of uniting two souls together as a single entity to strengthen one another, their families, and the community, and should be regarded as a serious commitment towards a lasting bond. Divorce only being the option necessary when the hardness of the married couple's hearts cannot be overcome to prevent further rupturing of the family and community than necessary, and should be equally treated with as much gravitas as marriage and not broached lightly either.
Let us have the government exit the business of dictating what constitutes a loving couple within cultures and societies and get back to their intended purpose of a legal framework protecting the legal rights of its constituents. We abolish legal marriage and divorce, and replace it with what I'd like to call civil union contracts and dissolution. This provides a winning situation on multiple fronts.
We simplify extending legal rights granted by current marriage laws to any two people or more who choose to enter into a legally recognized entity extending durable power of attorney, survivor rights, tax benefits, and any and all legal governmental interference nightmare scenarios that ride shotgun along with it as well as the legal nightmare that can potentially ensure upon ugly contract terminations. There is no restrictions on the parties involved beyond age limitations and sharing a residence, with granted exceptions for partners who are active military or are involved with many of the professions that involve extensive travel and/or remote isolation so long as a shared primary residence is maintained.
Theoretically speaking, this means that if you decide to be a perpetual bachelor for the rest of your life, but you live with your brother and trust his judgment, you could create a civil union for the two with all the extended financial benefits that were once reserved only for married people now extending to two people who trust one another to share a domicile. Clearly, the civil contract can and will have absolutely nothing to do with intercourse or reproductive, offspring, and guardianship rights, the legal management of these issues would need to be handled separately with legal repercussions regarding property and financial care of offspring within civil unions only addressing children born through natural biological reproduction between or adopted by both parties.
This leaves communities, right or wrong by your own moral and ethical guidelines, to define and police their terms for marriage and divorce themselves as they feel appropriate. We allow Abrahamic based faith communities to preserve their own sanctity of marriage without feeling the government is bullying and trying to redefine marriage while simultaneously removing what other groups consider to be civil inequality. This technically extends to others faiths for that matter, but you don't hear Buddhists for example carrying on about how homosexuals are destroying marriage. We also get the added benefit of people then being allowed to be married and simply opting out of government involvement within that partnership with all the potential losses of benefits and heightened risks that it involves with one's legal responsibilities as well.
How's that float your boats?