Your story about going away reminds me a lot of my Tanner. I got him and his brother for my 6th birthday and basically grew up with him (his brother died at about a year). He was everything to me and so different than any other cat I had ever met. He was so smart and would come running from the other end of the house when I called his name. He would let me (a child) manhandle him in any way I wanted without complaining, cuddle me and lick my tears when I would cry, and spend all of his time with me. He would also hold grudges when I would make him jealous. I once found a young kitten and took care of it for a few days. Tanner peed on my clothes for the entire next month and glared at me from afar. Maybe I shouldn't have left them on the floor to begin with. Hah. Anyway, your story of Krista really reminded me of Tanner not long before he died. I had left for college (the first time) and couldn't take him with me. My parents said he walked around the house howling and looking for me. He spent so much time doing this over and over. This lasted many months. After about 9 months he had to be put down because he was really sick and my parents didn't want to pay for any vet care. He was so healthy before I left. Anyway, luckily I was able to Amtrack home and sneak into my parents house to see him one last time. My parents and I were not on talking terms at the time so it was hard. But annnnyyywaayyy. Cats definitely miss us a lot more than we realize, I think. In addition to that, I think they just miss the social interaction in general. I had no idea Morty needed or wanted a friend when I adopted Po. The change in Morty was insane. I was warned by the SPCA that he may not be good with other animals, but they bonded immediately. I didn't even have to do the classic two week seperation. He was so happy to have a friend while we were away at work/school.This. But also this idea that because cats are more independent than dogs, that they are also low maintenance and even automatable. I figured she had food and water in gravity feeders and an automatic litterbox that she was good for at least a week. I thought nothing of filling up the feeders, giving her a few scritches goodbye, and taking off for a long weekend or a business trip without setting up any kind of sitter to check in on her. It wasn't until I switched her off dry to wet that a sitter even became a consideration. And it wasn't until I set up the barf and poop camera network in my apartment that I realized she actually did not spend as much time sleeping as I thought she did. She clearly missed me. On at least one trip, neither of us slept very well because every time I woke from broken sleep and checked on her, she was sitting on the bench looking at the door, waiting for me to come home. It didn't matter if it was 4pm or 4am.
Honestly, knowing how much effort really goes into keeping a cat happy and well cared for is what has me hesitating on the next one. I know I want another cat. And probably sooner than later. But it's been therapeutic to not have cat demands or cat schedules to adhere to for the first time in years. (I don't know how beholden to the cat's demands and schedules I felt was before her senior struggles emerged.) I'm thinking I would love to wait out the state and see what things look like after June 15 when California is scheduled to abandon the color tiers of business closures and capacities. I want to go down to the shelter and meet cats in person. The thought of a Zoom adoption makes me very anxious.