We lost our beloved senior cat in tragic circumstances earlier this year. We had had him since he was a kitten and miss him, and having a cat dearly. We had also just had our second child when this happened.
Our cat was very good with children - obviously we kept DD1 away from him for his own sake when she was a baby/toddler but we had him long before children on the scene.
How long would you wait before replacing? We never expected to be in this situation but miss having a cat so much.