Well I'm not - if you take on a dog it's your responsibility to look after it, you can't just send it back to a rescue centre when the going gets tough. Dogs are sentient creatures not toys to be discarded when the owners gets fed up with them.
Nor am I ! You take on a dog, that dog is your responsibility for its life - or yours. Throwing it back onto a rescue centre - I'm frankly appalled. Are you expecting someone else to take it on ? Or are you just sentencing it to a lonely end ?
That animal trusted you - such a betrayal -