You guys are so old fasioned. You assume immortality will *have* to be by fixing our bodies, fighting disease and so forth, but what if we didn't have these frail bodies? What if we could have all our memories, personality and so on uploaded into a vastly powerful computer network? If you want a physical body you download into a robot and can walk around and do your thing. I'm thinking few would want to when they could have heaven in whatever virtual worlds they want. Orgasms that last for thousands of years are just the tip of the iceberg.
Anyway, it might be possible to upload like this in seventy-eighty years. Unless you're over the hill now you could live to that time with the stuff that's coming along to keep you going. I really hope I live so long, 'cause if I do I'll live forever, and can someday be a mind spanning multiple solar systems on giant sun-sized computers. Blows the pants off of being human, doesn't it?