Overall, I agree with you, but, as a fan of the Highlander TV series, I find this fun to think about sometimes.
People would still die, just not from natural causes (right?). Even today, dictators have more fear of a coup than cancer. Long lived species tend to have fewer offspring as well & would have to confront the issue of limited resources head on, instead of kicking the can to the next generation. I think a society that grows up around humans with unlimited life expectancy would probably look different than ours does, maybe in ways we can't imagine (even today, ritualistic suicide like Sallekhana is hard to imagine...). This would be different from a situation where people living today suddenly make this switch.
People would still die, just not from natural causes (right?). Even today, dictators have more fear of a coup than cancer. Long lived species tend to have fewer offspring as well & would have to confront the issue of limited resources head on, instead of kicking the can to the next generation. I think a society that grows up around humans with unlimited life expectancy would probably look different than ours does, maybe in ways we can't imagine (even today, ritualistic suicide like Sallekhana is hard to imagine...). This would be different from a situation where people living today suddenly make this switch.