We are the last Hominidae standing... Well, at this moment in time / history / as far as we can predict into a reasonable future (but Planet of the Apes starts in 2011 and the original story is set in 3978!) By that time apes have started bipedal movement. And are standing quite well. I say this to point out that it is far too early (in evolutionary terms) to say H. sapiens is the last of the Hominidae (all apes - who knows why the gibbons were separated out?). And our future is very questionable - given our terrible politics of division - our count down clock to nuclear ( doomsday clock - 100 seconds to midnight! ) annihilation, our refusal to deal with human climate destabilization, and our inability to curb our desires. Each of those species on the tree of life is at the pinnacle of evolution! We H. sapiens are just one, and just happen to hold the cat-bird seat in the food pyramid. That could change quite quickly - it did for the dino's back in the day ( KT-day )