Not true. Any beliefs which are based in reality are valid, though it's hard to categorize them as beliefs if they are reality. Gravity doesn't require belief, does it? It works whether you choose to believe or not. Believing in things which are unreal, or irrational, or based solely on wishful thinking, whether religious or not, would qualify as invalid in my eyes, though.
I am not trying to insult anyone. I am merely stating that a belief in something which cannot be proven to exist, which cannot even be tested, and which has no explanatory value in the real world is, by its very nature, a superstition. If you disagree then you only need to show the evidence that the rabbit's foot in your pocket really does change your luck.Insulting; yet again, every single person who believes in or adheres to a belief in something that's religious in nature as usual...clearly makes one no better really than the other Islam-a-phoebes and would be discriminators.