Tragedy Breeds Creativity

Tragedy seems to be the common theme of Romantic and Victorian poets. Keats, dead in his 20's writes about death...ALL about death. And then there are the women. Why are the majority of great literary women from the romantic and victorian period so tragic themselves. Elizabeth Browning, while a worthwhile and meaningful poet, cannot help put let her personal tragedy and desperation seep into her work. Why must you be tragic to be great??