BSM1
What? Me worry?
First of all why would a beaver ever be able to or want to build a children's hospital. Can you explain that? Second why would you call the beaver dam to be stupid or destructive unless you are completely ignorant about the benefits that their dams have on water availability to the environment in which they live. The fact you use the words stupid reflective of you lack of knowledge and destructive indicating you have absolutely no understanding of the ecological benefits the do is and indication of you ignorance of the ecology of our world.
Oh yeah! Even though I don't want to feed your delusion but I will give you an answer. First of all, beavers can cause tremendous damage by damming water sources that can flood productive land while cutting off water to downstream farm land. Secondly, if this damming is necessary, man can do it more efficiently with less unintended consequences to farmland. Thirdly, if you missed my sarcasm with the hospital barb, then maybe one of us needs to call it a day. Peace out.