Felix and Buttons are my own kitties but I am fostering Tara and Pebbles who are sisters. They are 1 year old at the end of this month and I have had them since November nearly half their life time. I have become so attached to them and the four of them get on so well I can't let them go, I'm going to keep them. Also I don't want their lives to be disrupted again they are part of my family now. I know people are needed to foster cats and I feel a bit guilty because I can't afford to foster more. Do you think I am being selfish to keep them?