I'm sad that things aren't the same with my grandparents coming over?

They used to come over and visit a lot, but my nana's dementia has gotten worse, and now my papa has trouble taking care of himself and they will probably move in to assisted living soon. I hate the idea of someone else living in their house. It's been theirs since it was first built like 35 years ago. :( It makes me sad, and realize how much time has passed.

I'm sad that things aren't the same with my grandparents coming over?
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