Why would they want to get married and spoil a good thing?
What if they want to spoil it?
Like other have said they have the right to be as miserable as the rest of us if they want.
Because when you are not married you dont have the same legal rights, especially when it comes to children.
You become family by the marriage and gay people have the right to start a familly.
If your partner is in the hospital, you can visit him/her as family, decide what to do and such.If you are just a boyfriend or girlfriend it's different, you are not familly and are nobody.
Being legally a family is important to raise children and just have a happy life.