Canadian MDs go to US, only 13% might come back

 

Today I found an interesting article. Only 13% of the MDs who moved to US are willing to go back. Why only 13% in Canada. Nurses and docs who have worked in US, say that it is too much work, no breaks, and you really have to work hard for the money. Why only 13% wants to go back to Canada. How bad is in US?