If this is true, then there are a lot of systems that are evil which proclaim themselves to be of good nature.

I rarely ever see religions proclaiming the mutual benefit of all. They usually are out casting those who do not follow the religious views. I would say that is not mutual benefit, to murder someone for oppositional views.

Extremely oversimplifyed anology which can only exist in a philosophers mind, reality is vastly different.

In reality there are little difference between good and evil, a surgeon has to destroy tissue in order to save you. We have to kill people in warfare, bomb innocent people and shoot innocent people in collateral damage ..just to hit a few bad guys.

Do you know the term, choosing between 2 evils? Plague or colera?