I had my cat put down today

he was a good friend and god I miss him.
He was the only cat I new that would come to me if I called him.
He was my alarm clock always faithful, he slept all night on my pillow.
The vet said it be $600 to $1200 to save him but I just couldn't swing it I'm on disability.
Man I feel bad!
I'm tired and going to bed.