Nihilism - the belief that nothing in the world has a real existence.But the real question is, even if it is true, then what? My point is, even if life on earth is meaningless or probably just a fluke of nature, we still have a choice. Either to be sad about it or revel with joy for this amazing experience.
I am inclined to choose the later ... day in and day out ...
But sadly, too many people spend their time in the hope of finding a meaning. It's like trying to reach a destination only to realise that the journey was the real fun.