Growing up my family was the poster family for "alcoholism." My father was the alcoholic, my mother was the codependent, I was the superstar and my brother was the scapegoat. Look up the terms, they are very common "roles" that people adopt in a dysfunctional home.
Now, though, I am married, and they say that you marry someone like your father... Well I didn't see it at the time... but "they" were very right. The good news is that I now know how to put Jesus into the midst of this household, and he is interrupting those old patterns I (and my husband) grew up with. My family is building a foundation on God--something my family of origin never did. My daughter is almost 1 1/2 years old, and I want her experience of family growing up to be very different from mine. So far she's gotten a little bit of both--unstable, dysfunctional parents trying to do right and live for God. I only hope that one day when she is commenting on this post she will be able to say that she had a great family who loved God first and each other second. With Jesus on our side my husband and I are going to make that the reality.
So do not lose heart about your lack of family. Learn from it and make it better for your children. Anyway, the Bible tells us that we are adopted as sons and daughters into God's family. How awesome is that! So in that way I am your family, and if you ever need anything you just let me know
Be blessed.