Is it a valid endeavor? It depends. (How is that for a cop out?).
Is it a valid endeavor? I'm going to say yes. It is a valid endeavor, but it is a path that has danger on all sides. Like walking a tightrope.
But just because it is dangerous, that doesn't mean we scrap it. We make plenty of journeys that are loaded with danger on all sides. Like going to the moon, etc.
Why is it valid? IMO, each species has an innate drive, a primal force, inexorable, inevitable, moving it, driving it, to evolve, to become, to expand, to self-actualize. You can't hold it back. Transhumanism appears to be within the realm of the path of human evolution. We must proceed. We have no choice as to whether to proceed. We will proceed. If there is any purpose for human existence, this is undoubtedly one of them. Indeed, it is happening right now. The only choice is,
How we will evolve at each turn on this journey.
I think its a valid endeavor, but one that is loaded with danger and ethical dilemmas at every turn.
Each step needs to be considered, reconsidered, and considered again. I think that is sort of what is happening now. Science is actually being slowed down by all the "ethical dilemmas" (stem cell research debate, etc.). I don't know that this slow down is necessarily a bad thing, though.
-ex(I can't believe we made it to the 3rd page of this thread prior to discussiong the original question & what does that say about human potential)tra