let me explain this for you and some others in this thread, because you are just extremely ignorant about a whole bunch of things.
MARRIAGE gives couples certain legal benefits regarding taxes, adoption, power of attorney, etc.  civil unions don't give the same rights.
the idea of a monogamous relationship bound in some form or another doesn't belong to religion.  sorry.  that's like saying being kind and compassionate belongs to christianity, because jesus taught it.
oh and lastly for you...yes, a name means segregation.  if a law was passed that all people under 5 feet had to be referred to as some name other than men or humans, like I dunno, "mogs," wouldn't that be segregation?  that's an extreme example but people want to be treated the same.
Lets cut the shit here, if you are against gay marriage you have a problem with gay people on some level.  saying that you are fine with them doing it behind closed doors or some other stupid shit like that doesn't make you tolerant, asshole.  no one likes to see anyone, straight or gay, making out in public, but I really don't give a shit if a gay man kisses his boyfriend on the cheek or holds his hand.  grow the fuck up.