Because, (to put it very briefly) cancer is not like other sicknesses.
How much money does the medical industry get from treating late stage brain cancer, or malignant melenoma? Fucking nothing, because your dead in a year. Corpses dont generate income, you silly faggot.
>BUT DEN IF THEY CURE THEM THEY WONT MAEK NO MO MONEY!
Not so fast, you silly little ignorant negroid, you.
You see, the grand thing about cancer is it can come back! Hell, you can get brain cancer, cure it, then get skin cancer later, and cure the fuck out of that too. Hell, you will turn old people into cancer factorys that you just cure the fuck out of every time they get anything relating to cancer.
>FUG YOU, IF DEY CURE ALL CANCER DEN NO MO CANCER AND I WONT EVER COME BACK
Well now you are reaching, my little fucking child. Ignoreing how asinine that is, the vector causes for cancer is fucking retardedly high in number. Sun causes cancer. Fuckin ceramics can cause cancer. God damn fish can cause cancer, hell, you getting a fucking xray can cause cancer to form. God damn, every day we are learning about shit that causes cancer that normal everyday objects we use right now can cause cancer (heres looking at you, asbestos)
You know what really causes cancer though? Little ignorant fuckbois who pretend to work for shit tier pharm companys (and i do mean that) pretending like they know their dick from their ass.
Thats what causes cancer. Now die, you cancerous fuck.