We have said it before, and we will say it again - we will never ever understand people who abandon cats. We understand that sometimes, unfortunately, complicated situations arise, preventing you from keeping your cats, but abandoning them is the last option - the worst option. Rehome the cat, give the cat to a no-kill shelter, find temporary fosters for the cat if you can't keep it one minute longer, but do not throw the cat outside to fend for itself.
Indoor cats don't know how to live the lives that outdoor cats do. They don't know how to fend for themselves. And if the cat you're abandoning is a momma cat who has just had her kittens… that's just sealing her and her babies' fates right there. If this person hadn't found this momma cat, hadn't worked so, so hard to get her to trust him, we don't want to think about what her fate would have been. But they did it, and now, she will be safe forever.
source https://cheezburger.com/43270405/momma-cat-and-her-4-kittens-get-abandoned-in-a-carry-case-in-an-old-cemetery-in-the-woods-but