I love my family. I was home schooled up through most of high school and I learned a lot about getting along with people and loving someone despite all of their flaws before I had dated anyone. I practiced a lot on my family. Family, when it’s strong, sticks with you through thick and thin and is a place of support
Characters, unless they are loners and I don’t tend to write about these much, should have some sort of family. They needn’t be blood-related, but they should be kindred. A place where the protagonist feels at home, a safe place to state his thoughts without worrying whether they are politically correct. Keep this in mind when you put your protagonist through the ordeals she will face.
As a side note, families that are blood related have an easy time harmonizing because their vocal chords are similarly constructed. This is my family: my mom, my brother, my sister and I singing at a benefit concert, We Are Priceless, to raise awareness about human trafficking that is happening right here in Washington.