We already have 1 cat (1 year old) and 2 DC (3 and 8 months) and i'm considering getting another kitty. Our Cat now is amazing. Fantastic with both children and very laid back (he's an outside cat most of the time, comes in for cuddles with us and the kids) I think my problem was my lovely cat is so easy i'm under the impression that it would be a walk in the park with another cat. it doesn't help when i read all your cat stories.
TBH if i didn't have dc and my dh i would be utterly content being a crazy cat lady. Hmph, i am being insane am i not