I think KT would be the ultimate judge on the poetry of your sig. Myself, I don't care for it much. Sorry.
It means (basically) even if man dies out and leaves, the earth and it's life will still continue without us. We are not 'All powerful'. There are things in the world (and the world itself) that are must more importent, and will last much longer then us. We take ourselfs for granted, we should look at the big picture. We are being taken for a ride, and one day if it were to end, nothing would know any different. Everything will still be here -without us, with not a care in the world. Other then that. I'm going to have to agree with kgirl. You have a sig! Yay!! ........ yeesss.