... No, it's not a good feeling. And I can see how it's scary, how they play with our memories and feelings, rewriting our whole lives. It makes one wonder what else do they do or even if what we think as of real is indeed the reality and not just another continuous and bigger experiment. But thinking that serves for nothing good.

[So it's better to not dwell on it too much, that's what they would like, so they become broken and apathetic.]

On the other hand, though... The part about losing something is debatable. We can only lose the things we let go of, if you want to keep something even if it wasn't yours before, there's no reason why you should give it up.