I happily retired at 60 with only CPP and my own savings. 
I've always said that people should be financially ready to retire by 60 even if they plan to keep working. Decisions about working are not always yours. Health can fail. Jobs can end. Finding a new job after 60 (even 50!) can be hard or mean a serious reduction in pay and benefits. Don't get caught out.
Well, Rob, if you want to work until 70, go ahead and try. But be frugal and plan for tomorrow just in case.