No, I don't think so. I too am an optimist concerning the future of mankind and our planet. Humans have been progressing ever since we first evolved and have achieved the most amazing things. Consider the developments in just about every department of life and they are truly astounding. It is in our nature to progress, evolve, explore and learn.
But we are far from perfect, and the most difficult aspect of life has been, and still is, our inability to get along with each other, at just about every level; personally and internationally. It seems to be a built-in characteristic of humans to be unable to tolerate each other. But we have our intellect and hopefully it is that which will make us learn to get along before we destroy ourselves, and our planet.
The greatest quality we need to develop is tolerance.