Marriage itself is not the right thing, and I don't know what rights are you talking about.
Are you looking for the right to carry same (heterosexual) stinking relationship that you will HAVE to carry for your entire life no mater if you want or not?
Are you looking for the right to possess someone legally while you are afraid that he/she may leave you if love fades?
The only benefit I see in heterosexual marriage is to grow your family. That's it.
God has given you opportunity to be free, to live as you want, to be free and let others free.
So enjoy this freedom and throw the kind of insecurity you have.
Marriage is born because of our securities, and it has done a filthy job of killing LOVE from this world.