Depends, I reckon it doesn't matter that we're nothing in an infinitely large universe, if its serious is a matter of our planet and opinions, because its irrelevent in the rest of the universe anyway.' I'm pretty sure I exist, my life is serious to me, lots of things are serious to me, but really I'm nothing compared to an infinitely large universe, nobody is, but I still belive its serious. (Sorry if I didn't make sense or answer the topic, its late and I kinda forgot what I was writing about :XD:)