Everything should be made as simple as possible, but not simpler.
Sometimes you can't get a simplistic answer because there isn't one. The point here is that while you may not notice this Act influence your daily life, it is still important. It makes things such as education, healthcare, freedom of expression, freedom of religion, freedom from sexual, racial and gender discrimination, and so on, rights that cannot be taken away. It gives you a right to a fair trial, and right to privacy. It protects the right to Democratic elections.
All of these we had already, although some of them took a while, but as long as the Act exists they cannot be removed legally. Hence it is a protection from the whims of government.