When people change, it isn’t sad. People change in order to adapt to situations, or to grow. People change as life beats them down, and they continue to change as they learn from their experiences. People need to grow. What really would be sad would be if nobody ever changed. Because if everything always stayed the same, life would be dull, boring, mediocre. Change is beautiful. So allow people to change without dramatizing it as a sad thing. It’s good. Change is how we survive.