Even though almost everyone knows that Fentanyl is in all street drugs and how it can kill you. So why do they still take the chance?

It doesn't even make sense for them to die because they've just lost a repeat customer. Can anyone please explain this to me? Thank you.
Updates
+1 y
I found out yesterday that my boyfriend died from fentanyl poisoning. Another one bites the dust.
Even though almost everyone knows that Fentanyl is in all street drugs and how it can kill you. So why do they still take the chance?
Post Opinion