I honestly don't know how much longer my 18 1/2 y/o cat will last. She had a terrible seizure today that lasted almost a minute, and I can't do a thing about it. She was also out of it for about a half hour afterwards.
I feel so sad and irresponsible, because I didn't do much to really control her epilepsy; all I did was give her a few drops of CBD in her day food. I don't know a vet near me that is either cheap or have affordable pet insurance, but they would have loved to help.
She had her first seizure a year and a half ago, and since then, I felt anticipatory grief on and off, and even bought a plush version of herself that acts like an urn. People keep telling me that it will be okay, and that I will have another cat that's just as great.
The truth is, I don't deserve another cat. As I stated before, I didn't take her to the vet often enough, and had I afford it, my cat would have been seizure free. If I did the same to another cat, it would be taken away from me for sure due to my actions.
TL;DR, I suck at taking care of my dying cat. 
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Black cat on duty