Why are people joking about crack? That's what I did, and I do regret it. It led me into a deep spiral of addiction, being homeless for a few months, but I eventually made it back. Crack is not a joke.
I have quite a few big mistakes but one of them is spending a fair amount of money on Counter Strike: Global Offensive cases and opening em' with keys. Keys are about 2$ - 3$, depending whom you're buying it from - either from Valve themselves or buy resellers.