"Morality is merely a manipulative tool to play on the conscience of those who can experience guilt."
Maybe to you, because you've probably never held yourself to any form of high standards. Morality can be used as an intentional hindrance by those who believe they are greater than those around them. Avoiding short cuts in life such as stealing, lying and cheating to get what they want just proves to them that they are in fact superior in a way to those around them.
I can tell you the strongest man I've met was a man of a God. A preacher that used morality in the form of religion as an empowerment to further himself farther than anyone around him, including me. Undoubtedly, the fiercest fighter in my unit, while still putting the needs of others before himself. Imagine how much greater he will be once he's put into a situation where he only has to worry about a singular goal and not the woes of others.
Morality can be used like a philosophical/mental anchor, that when taken off provides the appropriate results.