We fully vaccinate our animals because they travel with us at times, go indoors and out, are around lots of other animals, and are around little children. We have rats, mice, bats, raccoons, coyotes, possums, and other wild animals in our neighborhood and our dog goes off leash at a large dog park several times a week. I believe that any risk they may have from a vaccine is much, much lower than the risk of them getting a disease or passing to us, which can happen. Also, we take our animals to very good vets who are up to date on the latest research. We talk about each vaccine and they have recently made changes to their protocols based on research. That makes me feel like I am taking good care of my pets. They are very healthy.
If your kitty is going to be an indoor only kitty, then you might not need to get all the shots.