I had not been thinking along the lines of Dayenu when I did that, I simply wanted the refrain. However, there is something appropos in your mention of it, given my quarrel with our "too much is never enough" society.

I don't muck about with the word "God." For starters its an English word, as old as English itself. It is not a Name, and therefore I don't see how the rules concerning Names can be applied to it. The only exception is if I am in a community where the standard is "G-d," in which case I follow the minhag out of respect for the community.