I’m too selfish to be a foster parent anymore

Ive been a foster parent for a few years now and im realizing I just don’t align or agree with what they tell us to prioritize. It’s been very clear from the beginning that we are ALWAYS supposed to support reunification. After what I’ve seen and experienced, I almost never do. These children are being exposed to hard drugs, abused, neglected, traumatized and I’m supposed to want them to go back home? I’ve had children with permanent mental delays caused by exposure to drugs. Kids with long lasting physical ailments due to lack of proper nutrition. The emotional trauma you see in their everyday behavior is heartbreaking. I have seen it all. I even had a placement whose father was a pdf court ordered to stay away from children but their mom let him watch the kids anyway. The parents arent charged with endangerment or neglect. They take a few classes or go to rehab for 30 days and boom the kids go back. I just can’t do it anymore and I had to get it off my chest.