The Dutch people generally have very strong and moderately sized families (though some Catholic families are a bit larger). The family unit is valued highly in Dutch culture, and people of the Netherlands generally live close to other members of their extended families.
Despite the makeup of a family, however, respect is given to them. Single parents families are common in the Netherlands, and same-sex partnerships are legal. Many couples also live together in lieu of marriage. Grandparents generally live on their own if capable or in a nursing home. Even in the case of marriage, both parents usually work outside the home, and women often keep their own family name.
Holidays are extremely important to the family, and gatherings of the family are promoted. Each family has its own traditions for Christmas and New Year's Eve. Celebrations take place together. Even the birthday is an important event in the life of a family. It is completely common for friends to offer congratulations not only to the person whose birthday it is but also to all of their relatives!