Madness and creativity get associated, and this is not entirely inaccurate. Speaking for myself, depression and anxiety have broadened the range of my experience of the world in certain ways, have dislocated me in a way which makes me a more original and more challenging writer and scholar.
However, what I worry about is that people will only see this silver lining (which isn't common to everyone with a mood or thought disorder), and they won't understand how horrible mental illness is - the decrease in quality of life, the sheer suffering, the stigma, the lack of understanding, the expense, access to medical care, the side effects of medications, the frustration of not finding an effective medication, and so on and so on.