They are not unique. Now that same-sex couples in 14 states have all the rights and responsibilities of straight married couples, gay couples are rushing to the altar, right? Not exactly. Plenty of gay couples do not want to marry, and their reasons are as complex — and personal — as any decision to wed.

For some, marriage is an outdated institution, one that forces same-sex couples into the mainstream. For others, marriage imposes financial burdens and legal entanglements. Still others see marriage not as a fairy tale but as a potentially painful chapter that ends in divorce. And then there are those for whom marriage goes against their beliefs, religious or otherwise.

“It’s a very, very archaic model,” said Sean Fader, 34, an artist in New York who is single and asked to be identified as queer. “It’s this oppressive Christian model that says ‘Pick a person that’s going to be everything to you, they have to be perfect, then get a house, and have kids, and then you’ll be happy and whole.' ”

“There are many heterosexuals who feel the same way,” he added. After all, not all heterosexual couples choose to marry. But same-sex couples do seem more inclined to be marriage holdouts. According to a Pew Research poll released in June, 60 percent of lesbian, gay, bisexual and transgender adults are married or said they wanted to marry, compared with 76 percent of the general public.

Some of the opposition among gay men and lesbians is rooted in a feminist critique of marriage, which sees it not as a freedom to be gained but as an institution that has historically oppressed women.