Surely, if bi-polar was decided to not be a mental illness, you would make it so much more difficult for people who are bi-polar to get help when they need it? Speaking as the daughter of a bi-polar mother who is currently an inpatient in a mental health hospital I dread to think what would happen if she couldn't access help when she was at her lowest. I know some people, DM included, can have long periods of stability, with or without medication, but without the safety net of the mental health team, what would happen when a crisis occurs?
I do think we should view people who suffer from mental health issues the same way we view people with other long term health problems, though, just think it is still a long way off