Nope. We're still every bit as cooperatively vicious as nature has formed us. If we only end up living on the poles of the planet (assuming that we don't get out before the relative intelligence of our peers gets so low that we can't even figure out how to get away), we'll still survive for many millenia. I'm not giving up on Homo Sap. We're too vicious to go away anytime soon. Also, we are way more adaptable than dinosaurs. You ever see one wearing a mink coat? Nope, thought not. 
If you get to thinking you’re a person of some influence, try ordering somebody else’s dog around.
