A couple miscellaneous questions

First one being about Beavers. I would like to know a trapper's general thoughts on them, like for instance, do you think they are a menace, or a "noble" animal? Is a Beaver just a furry chainsaw, who is nature's big mistake, or are they a smart, valuable animal? General thoughts would be appreciated.

Second is, do you yourself often use pelts for clothing etc., or always sell them? Just wondering because, I was thinking it'd be pretty sweet to have a beaver pelt hat, rather than the cash. Just curious.