Why did many artists commit suicide?

[Marshmallows]

I always ask myself this question as well because in my mind someone who has fame, beauty and money must live a fulfilled life. The truth is that there a huge downsides to being famous like the lack of privacy and hate comments/witch hunts. People can barely handle one bully and now imagine an entire nation hating you for nothing? The truth is idols are constantly under the mercy or scrutiny of the public eye and one wrong word or action can ruin their entire lifes. Can you imagine living like that? The lack of freedom (of expression) must be like choking. Like a bird in a golden cage. 

Not money nor beauty alone can make you a happy person. 

There's also behind the scene stuff. Lots of idols are in slave like contracts, experience sexual assault and train under hard hard conditions. A lot of them had mental health issues before they even became idols.