Yes they are.
Recently I had several cats fixed. All of my "bobble" babies. Meyou has a black kit I was calli9ng Merlin. When they were fixed I had to keep them in the house for a few days. I didn't want Merlin to stay outside all alone so I also brought it into the house.
I can't get rid of it now! I've tried throwing it back outside but it won't have any of that.
'Merlina' has forced her way into my house and I will never be able to throw her away again.
But kittens have no preconceptions and don't adhere to the norm, so they are special and amazing. My two inside cats are training it as to the pecking order.
Still, nice to have a baby again.