Does your cat love you?

The fact that you weren’t too emotionally invested in your cats is why they weren’t too emotionally invested in you, not vice versa. As the human, you had the control over the dynamic of the relationship, and buddy, YOU chose not to give a shit. Cats respond to extra attention and return it equally. They simply do not do it for no reason at all like dogs or your own children, because they are not wired to give instant devotion to a parent or top dog.

I feel sorry that they died and you weren’t terribly sad. Those were some wasted opportunities for rewarding relationships to animals that, when given effort, are rich and complex.