Prince was a long time drug user, just like Michael Jackson. Folks in the Black community have now this for years. Just like the Black community knew that Whitney Houston began using cocaine as a teenager and was the one who introduced Bobby Brown to it.
Prince's stop in Illinois was not a hospital run for the Flu , it was to get him a "save shot" for an opiate overdose. This is from the people that worked for him and there are EMS records. There are also police records that have surfaced that in the last few months the police and EMS had made multiple runs to Prince's home for emergency care. TMZ has copies of police reports.
Despite his genius, Price was a human being and suffered from chronic pain for decades that eventually lead him to become addicted to pain medication which played a role in his death. May he rest in peace.