Hi Dierotao,
Saved or healed lives?
Yes.
I started a similar thread as this a while back, you'd probably be interested in checking it out:
Creationists benefit directly from the Theory of Evolution.
In the OP of that thread I cite specific examples of rapid medical advances made possible by examination of intuitively unrelated processes in very dissimilar organisms. In my mind, this qualifies as the "theory of macroevolution" benefiting mankind, since it does not rely simply on the concept of microevolution.
An example (more detailed in the thread I linked) that may demonstrate my point:
One of the greatest leaps in knowledge in the understanding of colon cancer relied on the study of the egg casings of fruit flies.
Outside of the context of the "theory of macroevolution", it would be highly unlikely that scientists would immediately and directly apply lessons learned from fruit fly egg development to better understand homeostasis of the cells that line the colon.
However, within the context of macroevolution, that is, the context that humans and flies are very distant cousins, it was a logical and valid step to take a single piece of data from human studies (a single gene) and direct further research in human cells based on that already done in fly eggs, quickly confirming a large genetic and molecular pathway with relatively little work and in a relatively short time.
Thankfully - for those patients with colon cancer who have and will receive advances in medical treatment years before they would have otherwise.