Still makes you a tool of the force. The force desires conflict because conflict makes you strong. Destiny is a huge part of the SW mythos, you cant escape it because the force has a "plan".
The force really dosnt care what happens since all life is recycled into itself. Only that the conflict continues. Kreia has it right, although her plan would kill huge numbers of people, it's the only way the people of the SW universe would be free.
You can consider the Grey Jedi as those who are wise enough to have seen this "plan" and want no part of it. Or in Kreias case want to free themselves completely.