As a consumer of all things science but who will never be more than a fan cheering from the stands, one thing I read somewhere stuck in my mind. It went something like:

"We are close to understanding the genome, which will lead us to understanding the proteome. Understanding the proteome will lead us to understanding the metabalome. Once we understand the metabalome, we will have everything: eternal youth, no disease, and everyone can have the perfect body of their choosing."

I doubt any of us will leave to see it, but it's a nice thought.