beliefs, keep or sell?

I am getting more certain in my opinion about people and their accepted theories, or in the other words, their beliefs. By that I mean if one believes in something, one sees most of the relevant events in a way that somehow can be explained by that theory or belief.

The beliefs can have different origins. You could believe in something simply because you inherited it. That’s usually the first tendency of a person to be related to a specific religion. One would believe in a specific religion especially in the early ages just because that’s what the family believes in. Of course I am ruling out the families with mixed religious beliefs.
A person could also believe in something because s/he learns to, at some point in life. Examples are “the dogs are dirty” or “there are ghosts out there”. I can say generally superstitions can be categorized in this group. They could be learnt through the family, friends, in school or the society.
Beliefs can also be results of some reoccurring pattern in one’s life. I think it somehow has to do something with conditioning. You see the patterns, and the consequence. Hence, you are made to believe in that specific consequence for that specific pattern. Next time the pattern is observed again, you’ll be waiting for the consequence, “believing” that it will occur.
Then again “doubt” can change the old beliefs, and shape the new ones, at any stage and for any subject in life.

Beliefs have the potential danger of converting into bias or prejudice. Then they can make dangerous inner pillars. In best cases, they can arise limitations for the person or those around, and in worst cases, they can turn into reasons to any unethical action, even crimes. The racism, religious prejudices and the extreme forms of pan-nationalisms could be examples of these.

After all, the interesting thing is when a person is trying to sell you his/her own beliefs, in shape of “theories”, which have “confirmed examples” in the outer world. And no matter if they don’t make any sense to you at all, or the arguments are so cheap and easy that you just get bored, or you just feel amazed by how the person can explain so many non-related phenomena by that “one” theory, they are being sold…and so is the story behind so many books and programs and “marketing”s to sell different beliefs, with the same goal: let’s make a bigger crowd with a common ideology, to overcome the other ones.

The only thing that gets lost in between all these theories and beliefs and ideologies and groupings, is that we, the humans, have forgotten that we can live by each other, despite all our different beliefs. The fact that as long as one’s belief works for that special person, and doesn’t harm the humanity, it deserves recognition, (I insist on recognition, not respect. But this will be a whole other subject) and it can be there, beside thousands and thousands of other theories and beliefs and ideologies, peacefully.

Does it seem that I am selling my own belief on this?!