What about medicine if you say death is good why postpone it by eating well, taking medicine and being safe?

I don't see why we humans should die I think if all science put their efforts together (as done in world wars) we could extend human life quite a bit.

The only concern I have is the difference in culture for example imagine a 20 year old versus a person 200 years old. Even today the generation gap between 20 and 40 is big and causes problems when interacting even just music alone as one example.