Blood or Spirit?

I've been thinking about adoption lately. I had sort of ruled it out because of how you have to prove yourself, financially, psychologically etc. It just seems like a lot of hoops. But anyhow, after thinking about my younger adulthood and how I'd always said that "there are too many children in this world who need parents to bring another one into it". But I'd let that go for a while because I wanted my own children, kids who look like me, a biological bond. But spiritually I beleive that blood is not what links us, it's the agreements we make with each other to be part of each others lives through many lifetimes. Soulmate groups. I know I've met many of mine. These are the people we've learned about ourself from in some way or another. We have an unexplainable bond with them because we have known each other through many lives. So, who am I to say that I didn't make some agreement to be mother so a little chinese girl? Or even a little boy born in my own town who's mother can't take care of him? I suppose when the time comes I will know which path is the right one for me. I just know that I never ever would have made a spiritual contract to never be a mother.