Or Amy Winehouse the human being with human frailties (some of which may have been aggravated by the uneven relationship she had with the media).
When a gossip magazine had a long running feature called "Where's Wino?" that encouraged people to send in photos of her not looking her best it must have been hard for her to crawl from rock bottom.
Her death wasn't just predicted but to some extent salaciously anticipated by the gutter press.
It doesn't absolve her completely from her own suffering but people have been in similar positions and pulled themselves back (sometimes with help).
Just watch Cracked Actor to see where Bowie could have gone.