My four little feral rescues would not know about foster failures, talk to my wife about that.
Fostering is emotionally hard, to spend so much time socializing and interacting with a kitten, then giving them away just when they start bonding with you.
After 4 months someone took a shine to the stray that found us. I couldn’t let him go both for me and because I didn’t want him to think he was just being tossed around.
He is happy here in the barn and the shop though the other cats in the blood pride won’t accept him very well.