Abu Hurairah narrated that the Messenger of Allah (s.a.w) said:You don't have permission to view the spoiler content. Log in or register now.
"The lifespan for my Ummah is from sixty years to seventy [years]."
Jami` at-Tirmidhi 2331
This argument of lifespan is only used for non-muslims since they donot have any morality except with their own logic
Islamically if scholars come to the decision that its ok then since they have more knowledge than us we should believe them and affirm what they say.
The money system has changed, and so has other stuff, but they are not completely new concepts,
Also women are not new concepts, women have stayed relatively the same, therefore the ruling would be the same