I work now in the senior care industry. We help quite a few people who are caring for a spouse with dementia and/or alzheimer's. When one man was asked why he has continued for the past five years his daily visits to his wife who no longer remembers him, he simply said, "Because I remember her."
I have a feeling that Heaven would be Hell for him if she isn't there with him, since I know it would be Hell for me without Mama.
3 hours ago