Agreed. Personally, I take supplements as a way to complement my normal diet -- not to substitute it. Once in a while, when it's not possible to have a real food meal, those MRPs can be also very handy.
If you want to have a healthy body you have to put it under a stress level for which it was designed by evolution. I.e. exercise once in a while and don't just sit in front of your computer, eat enough fibres and harder to digest food, etc