I cant see why someone would post about their earnings, to me that's my personal buisness. I think alot of the time if it's true it's a 1 off. I think it makes them feel better & bigger than others.
I will never forget my uncle, he was a multi million aire in cash plus his assets were worth millions but he was the nicest bloke going, i never heard him brag. His main home was nice but not what i would have lived in if i had his money but his weekend home was more like it. I asked him once why he only lves in that when he could afford so much better, his reply, "I have nothing to prove & what does it matter what people think," If you had met him you would not know he was minted just know hes done well. He also said the majority who have dont go on, it's normally the ones who go on want people to think they have it when they aint.
Macc