They said that they love us and want to spend more time with us since they are aging. They wanted to sell their home and move in with my husband and I (in our 50's) permanently. I know there's another reason - they need to sell because they are getting financially strapped. We do pay their mortgage. They want to use their money and live a better life and the only way they can do it is to be with us for good. I know that we do get along and we love both of them dearly too, but I do enjoy quiet time with my husband and dog. They also have a dog which is bothersome to my dog. I was left speechless when they told me their idea and my mom now is hurt and disappointed in her daughter. They can rent their home and live with us for 3-4 months if they need the money, but permanent?