Can't claim equal rights if you are not equal.<quoted text>
If a "sterile, redumant gendered couple" is always only a "half" of a marriage, then we want at least those protections and benefits that will apply only to the couple. If children are adopted by this couple, then we want full protections and benefits.
Get your own identity and legitimate rights. Quit trying to impose an imposter relationship on marriage.
Adoptive parents already have more protections and benefits. Ss couples adopting already do too. They just deprive the child of one parent.