From what I gathered from the show most of the parents did show plenty of love and did try to discipline their children...
...one kid ended up hanging himself.
I have a sorority sister who is bipolar. One day she is happy-happy-joy-joy and then next day she can't stop crying. I know her parents and they were very supportive of her decision to start taking medication.
I used to think that people like her did things to get attention. I have known her for six years now and I know this is not the case at all.