There are a lot of people working extremely hard in that field. It's just not very flashy or politically salient since it's so personal so it's very hard to rally people around it to get some more funding to these programs. Taking kids away from their parents always goes through the courts and is not in any way as simple as you make it out to be. Giving away your kids, even if you've fucked your life up is not something most people want to do voluntarily.