The left wants unlimited embryonic stem-cell research, because that supports the dehumanization of unborn children; it also has no positive results so far. They don't support adult or autologous stem-cell research, which produces results.
One might get the impression that they just want people DEAD ... unborn, elderly, disabled ... as many people as possible DEAD.
They have used medical "hopes" as the justification for infanticide; but I think you're right, in the end they want a nation full of people who look and think like them. Anyone who doesn't fit their elitist "mold" is disposable. I think one of the reasons the left despises George W. and George H. W. Bush so much is the fact that the left thinks they should be leftists (Andover, Yale, Harvard, wealthy New England family, etc.), but they aren't -- anything that confuses the left is seen as evil by them.