The traditional family consists of a father, mother, and children. This is the nuclear family often shown on television as the familial standard. However, the 21st Century showcases various family units, some very different from the standard unit of prior decades. Today, children are often raised in single-parent homes, by grandparents, or by LGBTQ+ parents. Some families opt to have no children or cannot have children due to medical or emotional barriers. The idea that parents and children make a family is a basic definition; however, to accurately acknowledge other family structures, a broader definition is necessary. In addition to a universal family definition, plenty of people consider a group of friends to be family, and many consider pets as defining members of the family unit.
Who comprises a family is up to the people in the family themselves. People may opt to keep blood relatives in their lives, or let them go if they are toxic to their well-being. Many folks add caring and supportive people to their extended clan when they choose, deciding who belongs in their specific definition of family.
Source: https://family.lovetoknow.com/about-family-values/meaning-family