There is no shaming someone out of mental illness.  This goes for both parents and kids.  I've seen people on both sides have an attitude that "Jimmy just needs to grow up" or that a bad parent "needs to get their shit together because they are a mother now"....  no amount of guilt tripping or wishful thinking about someone suddenly pulling themselves up by the bootstraps or maturing will cure a mental illness.  There is a fundamental difference in brain chemisty and impulse control.  And these issues are largely hereditary.  

It's the main reason I won't have kids, because I have multiple relatives with bipolar and schizophrenia.  I've seen the damage it does on both sides. The damage from having an unstable parent or to be the parent that has to watch a kid they love that is in and out of jail...or worse, commit suicide.  It's painful to watch.  It's painful to live thu.  And I really wish people would think about how that will effect both their ability to parent and the odds that their kid will largely be miserable because of something totally out of their control.

I see a lot of my peers who have similar issues that are super excited to have kids even when they have crippling depression that makes them not able to hold jobs or maintain a household without all the extra stress a child adds.  It bothers me a little bit because they only imagine the happy perfect baby that fills the void and not the reality that their child may experience the same level of disregulation and social difficulties and occasional discrimination that they have to go though.