Everyone becomes senile sooner or later if they live long enough. American families have largely abandoned their older members. The vast majority of older people are self-sufficient. Intelligence declines with age. Personality changes with age, like hair color.
People become cranky as they age.
Older people tend to have little interest in sex. Older people have great difficulty learning new skills. Older people tend to be inflexible. Most older people lack creativity and are unproductive 10. Most older people are lonely and isolated.