Earlier quoted context omitted.
Tax, immigration/emigration, and will/inheritance reasons. For one thing, the government gives you a tax break if you marry; this was particularly useful because, in the old days, women didn't work so it made sense to not tax the man (who did work) because he was effectively making money for two (and possibly more if they had children). Similarly, getting married changes your defaults if you die intestate (that is, y…
> Tax, immigration/emigration, and will/inheritance reasons. Inheritance should be simple enough with normal contracts, regardless of marriage (same goes for hospital visitation and medical decision-making, which you didn't mention). Immigration is already completely arbitrary, at the whim of the government. The government could change the immigration effects of marriage just as easily as changing who can get married…
No. United State v Windsor (the DOMA case) proved that. Spouses have estate tax exemptions. Windsor sued the IRS for $363,053 in estate taxes that she paid to them because the IRS didn't recognize her and her wife as legally married for tax purposes even thought New York did.
Civil marriage is a form of a "normal contract."