The following will apply equally to our feline friends.
Warning - Kleenex alert 
THE LAST WILL & TESTATMENT OF A DOG
Before humans die, they write their last will and Testament, give their home and all the have to those they leave behind. If, with my paws, I could do the same, this is what I'd ask:
To the poor and lonely stray I'd give: My happy home, my bowl and cozy bed, and all my toys. The lap, which I loved so much, the hand that stroked my fur and the sweet voice that spoke my name. I'd will to the sad, ...scared shelter dog, the place I had in my human's loving heart.
So, when I die, don't say "I'll never have another pet, because the loss and pain is more than I can stand." Instead, go find an unloved animal, one whose life has held no joy or hope and give MY place to him. This is the only thing I can give: the love I left behind.
Taken from Eugene O'Neill's Last Will and Testament of a dog.