Both sides have experienced taking care of their previous generation and saw the tensions it caused with their significant others. Now neither want to be a burden to our generation so they prefer to live independently.
Unlike their parents who were poor immigrants to NA with little to no retirement savings, they held decent jobs for most of their adult lives and have the financial means to live comfortably for the remainder of their lives.
So sometimes it isn’t the kids who prefer to send their parents to retirement homes. Some seniors take pride in taking care of themselves.