The endangering of our littermates is less dire than the actual extinctions that have occurred amongst our ilk in the genus Homo. Denisovans and Neanderthals seem not really to be species separate from H. sapiens, but subspecies or races. Not really sure about H. floriensis (hobbits), but they seemed to not inject themselves into our genepool, and also seem worthy of their own bit of the world, Flores (which they could share with dragons! I kinda like the idea of Hobbits, Dragons, and Giants having a place in our world).

I suspect I am more than 4% Neanderthal, actually. Denisovans seem to have made a giant impact on folk from N. America to Micronesia (like Heidelbergensis the remains we have of them appear to have regularly exceeded two meters in height).

But the power to restore extinct species also looks to be falling into our grasp and the loss of our closest relatives might be one of the likeliest to rectify first, as we have so much of their DNA in our own veins. Given the survival of so much Neanderthal and Denisovan DNA, and that none of H. floresiensis seems to have made it, do you think bringing back Neanderthals as a species has merit? I do see that H. Floresiensis does, as, again, they seemed to be pretty much confined to Flores, and didn't make the melting pot H. s. sapiens turns out to be.

Just curious, as I sure don't want to tolerate the loss of the presently endangered and likely to be lost primates you list. Hobbits seem meretricious as well. Given technology and how easily we can improve our development that has mostly been the cause of extinctions, I see that many species once considered forever extinct may be merely temporarily on hiatus.

Thanks!

Edit: development has been the cause of most of the extinctions that can be laid at the feet of Humans, I should say, not all extinctions.