Indeed, and a very real scenario that is already starting to play out is the evolution of bacteria outpacing development of new antibiotics. We've quickly forgotten the impact these diseases had just a century ago, and without further breakthroughs (which of course are very possible) we could easily see, e.g. TB return as a major cause of death worldwide (i.e. even in developed countries).

It's not only our own biological evolution that deeply affects us.