Canada, eh? Why do Americans believe silly Canadian Stereotypes?

I live in a log cabin, my best friend lives in an igloo. My other best friend, who lives in an igloo as well cant speak a full sentence without using the world "eh" at least 4 times.We dont have electricity and often I have to go out at night to fetch wax for my dad to make candles out of so that he can teach me some math because we dont have universities in Canada. My younger sister rides a polar bear to school and we all look like eskimos. It snows all the time here, all year long. Winter is the only season we have and I have never seen grass in my life. My neighbor is a beaver trapper. Sometimes when I'm "oot ' aboot" (read: out and about, but because I'm Canadian, I cant pronounce that right), I see police men unmount their horses to play and friendly game of hockey in the middle of street. There was this one time when they all had to stop mid game because they had to let a moose cross the street. Actually no, they have to stop all the time to let moose cross the street. I have a beaver, polar bear, and a moose who reside in my backyard and I can almost always see snow on ice caps across the street from my log cabin home. I have to snowshoe to my best friends' house because she lives in a higher and colder region of Canada (hence, the log cabin).

Why do Americans sometimes believe in these ridiculous stereotypes about Canadians. My best friend went up to San Diego and was in the hot tub at her hotel and some Americans started talking to her and asked her if we had universities and electricity in Canada. Where do you guys think we live? In the north pole?!?!?