What is worth believing in?

History proves evident that bad ideas need special protections to propagate. While good ideas hold up to criticism, simply for their logical strength and realistic applicability. A good example of bad ideas needing special protection would be blasphemy laws, and the labeling of critical thinkers as heretics and heathens.
Note that this doesn’t only apply to the claims of religion, but to many other forms of superstitious dogmatic assertion. If you believe something, you should not be afraid to question and test it's merit. When you become offended by skeptical inquiry of your beliefs and ideas, you reveal your insecurities about how valid they are.
If you arent questioning what you believe to be true, and the reasoning behind your belief, you have forsaken any semblance of intellectual growth.

Not knowing something is not a bad thing. Admitting the voids in your knowledge is how you begin to fill them.

More important than what we believe, is why we believe it.
Everyone has the right to believe whatever they want to believe, but the logic of the reasons they give for their belief, as well as how accurately the belief corresponds to reality, is the metric by which a beliefs value is measured.
Claiming all beliefs to be equally valid, and by some stretch equally deserving of respect, is failing to understand the metric of a beliefs value.
People deserve respect. Beliefs and ideas however deserve an amount of respect directly proportionate to their factual and logical strength.
There is no reason to believe that which cannot be shown to be true. To do so is to intentionally forfeit intellectual honesty, and any chance of understanding what is actually true, in favor of belief in what you personally wish to be true.

We should never mistake what we do not understand as magic or divine intervention. Instead we should seek to be comfortable with letting our unknowns be unknowns until a logical conclusion is found. Our need for conclusions in place of admitting our ignorance is what fuels the misguided, and perpetuates superstition. That need to know. To fill the void, with anything that will stop the sensation of uncertainty. But how we do so is often with our baser selves. Our emotions rooted in instinct drive us to what feels good to us, rather than what is true.
Herein lies the greatest hurdle I personally believe humanity will ever face. To settle for belief for the sake of comfort and peace of mind, or to strive to know at the cost of said comfort; at the cost of a false sense of certainty.