Having lived in a basement apartment with cats, they were very stressed, even with us with them. Not enough windows*I can't even imagine keeping ANY cat in a basement. Or surrendering any cat to a shelter.
As for surrendering, I simply am so grateful to have a support system who can help when times are rough that prevented that situation from ever occuring. I'm also grateful that I've been in the position to help pay that support forward. I hope that's never a decision I have to make.