Certainly. Yet poor and wealthy people often forget we are mostly given equal amounts of lifetime (in first world). The fact seems to frustrate those that want disequality (believe money is everything), and it seems to be wilfully ignored by those that say they wish for equality (we mostly have equality in many important things: the politics of arguments relating to other equalities is often relatively bizarre).

> but wealth buys you a factor of two in lifespan at best.

We tend to refer indirectly to average lifespan, without context, which is strongly influenced by baby deaths (also childhood and teenage deaths). In another comment about elites: “Life expectancy for rich people is up”. That statement strikes me as being meaningless without further details (especially given the context that the USA is rich yet lifespans are going down!). What is an elite baby? It turns out approximately all of us are terrible at maths, probability, and clarity of communication.