To generalize it, I'd call a belief "an idea that you are attached to". And it bears upon your more general blob of beliefs, thoughts, memories, etc accordingly. Like a constant among variables in the midst of an algorithm.
Ahh, now that's an interesting idea. Beliefs are important because they are communicable. So belief gains weight from its social significance. As society is powerful then so are beliefs.
So a man outside society, a hermit, might find his beliefs falling away.
Ahhh. Yes, they are thinking religion. I didn't think they'd lunge that way. I mean, with all the politics and gender stuff around these days, I figured the term would bee seen as broader. A wider range of options.
That said. Meh. Your thesis sums to "beliefs are important because beliefs are important".
Ah, so it's a narrative control thing. Controlling the narrative (including the narrative of me, my ego or whatever) is important.
Well this begs another question. "Why is the narrative so important"?
I mean, we stand in the midst of a constant hurricane of sights, sounds, thoughts, vibes and nameless sensations, but the narrative gets this primary role.
Why dost thou harbor this vast hatred for wheat?