You might be narrowing the definition of life to mean "body and mind fully active; useful spirited existence; painless existence". But ask the senile when they

You might be narrowing the definition of life to mean "body and mind fully active; useful spirited existence; painless existence". But ask the senile when they are no longer senile, or the once-despressed, or the ones who live in pain (sickle-cell anemic?) if death is better.