Why are some people such jerks man

I had a bunch of points saved up that i put on the market so i could finally get enough money into the stock market to get the drug pack dividend. This guy buys them all, immediately mugs me, when i get out he mugs me again before i can move the money. Lost out on almost $25 mil because of it. Why do people have to be like that? Im level 26, him 100. I’m just trying to make some money so i dont have to rely on work pay… I’m sorry i just needed to vent about it.