You're the executor of a parent's or another loved one's estate. They've left money to some family members, others they were close to and charitable organizations.
Many people like to downsize as they reach retirement age. With the kids out of the house, they do not need nearly as much space. They want to get rid of the clutter they have gathered over the decades. They may want to move into a neighborhood with additional services for things that become harder in old age -- like cutting the grass or shoveling snow.