My two cats are "inside" cats. I don't want them outside picking up some disease, getting mangled by dogs, or run over by cars. They're quite happy inside. Every morning they curl up on my lap while I read the paper and drink my coffee. During the day they usually come to wherever I am and curl up on the floor.
When we go away for several days, even though our neighbor comes in and feeds they, they show plenty of affection when we get home. If that's neurosis, so be it.
I think most cats raised totally indoors are fine. What you don’t know, you don’t miss.