I hate to break this to you, but evolution isn't about humans or dolphins or spacefarers, it's about genes -- evolution is genes replicating, using organisms as vessels.

In answer to the old question about which came first, the chicken or the egg, an evolutionary scientist answers, "a chicken is an egg's way to make another egg."

Also, at a more mundane level, by the time our descendants are scattered across all the local star systems, they will be so different from us that we won't recognize them or feel any special kinship.

But on reading your post to the end, I see you're probably kidding. Oh, well.