I'd just like so say I don't believe in all children being taken from parents with mental health issues. If the parent is somewhat capable, they should receive intensive support from the community to help them be a good parent - and children should be monitored and helped. I received no support as a child and I even had teachers mock me. My parent needed intensive support desperately - they couldn't cope with a job, university and a child on their own. Nobody helped them, not even doctors - they just brushed them off and told the, to get on with it.
I had to cope with going to school after being hit and told that my parent "was going to kill themself" when they dropped me off because they couldn't cope. I had to deal with their erratic mood swings, and because the goverment/nhs couldn't be arsed to help - and they still cant! - I had to practically become a carer at age 3. My parent self harmed, attempted suicide and had "up" episodes where they'd spend all of our food/rent money on clothes, toys, holidays.
This isn't a post slandering individuals with mental health issues - its a post stating how let down individuals with specific issues, and children, are let down in the community. If my parent had received support when I was little, my life could've turned out very differently and I think that its very sad that thousands of people are let down in this society.