Yes, NanaPlenty my sister still fosters at the age of 62, and with the help and support of her retired husband, who is 66. They are both ready to stop and retire when the child they are currently fostering goes to a permanent home. There is extensive training first, to determine whether you are suited to fostering, as there are many issues to learn about with Looked After Children.
Over the years, they have cared for children with violent, abusive and substance addicted parents. They take children to contact meetings, meet with adoptive parents, grieve for the loss when each child happily moves on, or returns to rehabilitated parents, and manage all the safeguarding factors, such as not leaving a Looked After Child with babysitters unless they are CRB checked and approved by social services, which means the rest of the family tend to socialise with them around circumstances that suit each child.
It's a challenging, physically demanding vocation. My sister and her husband deserve a medal for the way they have unconditionally loved and cherished many children I coudn't have done it myself, especially at retirement age.