Vanity activities

To call reading the news “vanity” exposes the true vanity of this kind of post. What is the logic of assigning the word “vanity” to my interest to know what’s going on in the world? It’s vanity because I have no important decisions to make about the war in Ukraine, or the perfidy of my government?

It’s not vanity, it’s a desire to understand my world and my place within it.

What IS vanity is imagining that one’s own tastes are the only tastes that matter in the world.

The given definition of vain is "if they don’t lead to something more important (e.g. profit)". I don't directly profit from reading the news, it's true. I'd have to make quite hand-wavy arguments about why it's beneficial. We can also list activities such as friendship, dreams, appreciating beauty, and feeling excited as non-profitable. Then there's having aspirations: what do we gain from that? Without goals, we could save a great deal of time and effort. Striving for profit, then, is a vain and non-profitable activity because of the unnecessariness of everything.