humans are the destroyer of this earth

Do anybody think humans are the destroyer of this earth?Humans will only destroy things in this earth and develope their/our community.Humans have no contribution to this earth but destroy things.After destroying things,making pollution,they will plan to flee,are humans timid,cruel?
Do anyone agree?

[本帖最後由flyingbeauty 於2007-12-2218:51編輯]