That said, some people do have genuine chemical imbalances. I've had bipolar disorder all my life. My cocktail of medications has allowed the last 11 years of my life to be the most productive, stable and happiest. There are of course side effects - and I can understand why some people find them intolerable. I have tremendous difficulty ejaculating, for example. But on balance it's worth it as a) I'm alive and b) my quality of life has improved.
Likewise for my grandmother, my mother, my aunt and my cousin. Bipolar disorder ravaged our families at various points and medication has improved our lives immeasurably in various ways. I just feel for earlier generations that didn't have an explanation (let alone cure) for their woes.