A majority of Americans now support marriage equality, according to a string of polls in 2013. 52% of adults, according to Gallup. 56%, according to Quinnipiac. 55%, according to USA Today.
17 states have legalized gay marriage in some way, and more states are trending in that direction.
Of all the points I've made here, this one has received the most criticism from libertarians. Some say the courts have decided in several states, and that's not fair. Some say the government should stay out of marriage.
My initial point here was that there's a trend in support for marriage equality. To those who say judicial overreach is a cause for concern, I agree. To those who said the government shouldn't have their hand in the marriage pie, I agree in theory.
Unfortunately, the government decides a lot of things in the realm of marriage: how you file your taxes, who gets custody of the children, how much your ex-wife gets in alimony payments, etc. So, while I agree in theory, it's rather impractical in practice to just bury our heads in the sand and ignore it.