it is hard to tell.
80 year old's and older might not have expected to live to their age they are now.
humans unlike other animals don't have a set time of age.
dogs and cats have always lived to 15 no matter how better medicine has gotten.
humans at some point had the average of dying at 40. 20 was considered middle aged at one point and now 20 year old's are still seen as kids or young adults.
it is hard to tell how long we will live.
we could become immortal if we wanted to.
we could remove our bodies and build a machine around our brains or put our bodies in a chamber and plug ourselves into a computer and send our own consciousness into a robot that looks just like us and have them walk around places.
it would be easy to do once we figure out how to do it.