I find the canadian dollar being higher useful.
It means when I invest my income overseas, I can buy more stuff.
It does mean that my old purchases aren't worth as much, but them's the breaks.
As I intend on living in Canada, and my biggest asset is my future income, by buying out of country assets I diversify away risk.
It does hurt Canadian exports -- but the fact is, our exports are doing great. It is the extremely high rate at which our exports are flowing that is causing the increase in the dollar.