If one of my pets was suffering then I would have no problem or regrets taking it to the vet for a peaceful death.Sad news. I had to put one of my two beagles, Jingles, to sleep. She was suffering from seizures that could not be controlled with medications. She went into a series of seizures that simply would not stop and the humane thing to do was to put her to sleep. She was put to sleep in my buddy's vet clinic in the very same room that she was born in 12 1/2 years ago. She was a loyal girl and in her younger days could run a rabbit almost all day long. I buried her today in the back yard in an area that she used to lay in and absorb the warm sunshine. My heart is breaking tonight. However, I know she is in a better place and no longer suffering.
I would still cry. But nobody lives forever. Everyone dies.
Best thing is get a new pet fast.