When you think about these things it means you have nothing planned in life to keep you busy, time flies by pretty fast when you're so worked up in it.
Meanwhile. . .
I sometimes like to think about other living organisms and how they feel with the whole " what is this..., what is the meaning to life" situation. And maybe our world is the cell and we're like the membranes or something of this bacteria, living on something or someone bigger than us.