Time and place are both temporary, matters which are inevitably subject to change.
We don’t own either. So when we leave and then return, while everything and everyone may physically remain the same, we know in truth that they are already different. The place and the people has, gradually, created a new version of itself. One that is similar but is also different. And so has you, from when you parted ways.
So when we stay in a place or with a person, we collect but just the memories. For when we return, the best we can do is to only remember them, and not dwell over the difference they ever made. We don’t own them after all.