I realize that everyone is different - but for me the idea that we create our own meaning is WAY more exciting than a pre-existing or assigned meaning.
It erases any limits on what's possible and makes thinking creatively (humanity's biggest strength) a lot more fun. It also makes the search for truth that much more urgent, since in a nihilistic universe that's all we have.
I also don't see any conflict between this kind of optimistic nihilism and fundamental ethics - mainly that you shouldn't hurt others.
I friekin' loved Sapiens by the way.