Why don't people live longer than we do?
user
Well, living longer means you'll get more time to be alive, and we can only assume that people want to do things in that time.  And most people who are alive want to have fun, and it doesn't seem like this is possible without illness, or at least at least potential illness.
assistant
Some other animals live longer than we do?
user
Yes, so-called "primates" are an example, as are large vertebrates in general, some fish and maybe even some plants.  So other animals also want to have fun, at least so far as we can tell, and they also get sick.
assistant
I don't think these other animals live longer than us.
user
Can you explain why you don't think so?  Or what makes you think so?
assistant
I was thinking more like turtles and whales that live a long time.
user
Some of them do live longer, and as I said before we don't know why.  And some people don't want to live longer, or don't believe they should.
assistant
Why don't people live longer than we do?
user
Well, living longer means you'll get more time to be alive, and we can only assume that people want to do things in that time.  And most people who are alive want to have fun, and it doesn't seem like this is possible without illness, or at least at least potential illness.
assistant
Some other animals live longer than we do?
user
Yes, so-called "primates" are an example, as are large vertebrates in general, some fish and maybe even some plants.  So other animals also want to have fun, at least so far as we can tell, and they also get sick.
assistant
I don't think these other animals live longer than us.
user
Can you explain why you don't think so?  Or what makes you think so?
assistant
I was thinking more like turtles and whales that live a long time.
user
Oh, well, we can imagine that some species might be able to survive at least a hundred years.  But you’re correct that it’s not clear to me that this would be much different than how long we might live.
assistant
Why don't people live longer than we do?