Most Canadians aren't that delusional that they will actually live until they are very old, in good health, and require as much money later on than in their 60s and early 70s. I think you should live while you can, and don't be afraid to take YOUR CPP whenever you need it.

Life can be short (at least healthy life), and you never know when a debt- ridden government will start looking at things like CPP.