Why would anyone believe in the zodiac?

The implication of this sentence is not to trust anything metaphysical, or to say not to trust anything else, such as constellations. If it is the first one, then the answer is that people don't necessarily believe these things, but they are just for entertainment, but everything said in the zodiac is ambiguous, and everyone feels the same way when they read it. If it is the second case, in fact, the constellation and the zodiac are half a catty, and they are of the same nature.