My personal opinion of Intelligent Design is that it is a theory offered by Un-intelegent people and is basically a "cop out". Just because YOU don't understand something, it doesn't mean that YOUR theory must be right, or even that it IS a theory rather than just rationalisaton to fit with your preconceived ideas of how the universe came to be. I don't know how memory works (very few, if any, do), but that doesn't mean I can't remember anything....now where was I?
Maybe there are other universes that we know nothing of where they are saying "if gravity was just a little stronger...we wouldn't be here!" Of course, just because there MAY be other universes, it doesn't mean they have to exist! Maybe there are, but the constants are always the same...because they are fundamental to how things exist. The constants may always be the same in every universe...they are, after all....constants!