Sort of sad but it was outweighed more the fact that he had a forever home and have been doing fostering long enough to know this is the better outcome in many situations. So was really happy for him but do miss his shouting for me to get his balls that he has hidden and when he thinks it is food time.
Believe me if I lose a foster due to illness I cry for them as though they are my own have still not managed to harden up in any degree to that part although if that decision has to be made it is always made in the interest of the cat such as the quality of life mainly and prognosis.