The life you have given them is WONDERFUL! That was a kind act you did for those babies and it was bound to happen... You can not keep ALL the porch kitties that come your way... You would have to get a bigger house and that would mean moving to where they wouldn't find you.

But I would have cried too and leaving them at their new home would have broke my heart..

Yesterday at my son's, when I left my babies, I just got up and walked out and came home or I would have cried like a baby. I know how hard it is to part with them, I do it every other month.
(Still breaks my heart too)