If you raise a cat from kitten so it doesn't experience negative memories/associations with humans, consistently and empathetically analyze what it wants, and earn it's trust, they will be unbelievably affectionate and attached.
If they meow at you or otherwise try to get your attention, they are trying to communicate something. I used to think they were just being cats doing random useless things like sniffing, pawing or meowing, but nearly every single time there was some scent I needed to deal with, a desire to poop/eat/move or something real that they were trying to communicate. If you consistently ignore their attempts at communication, they will stop trying after a few times (wouldn't you?) unless they're like starving. But if they know you pay attention and respond, they will communicate their wants to you pretty clearly. Nothing they do is random, there is always a reason for it.
If they meow at you or otherwise try to get your attention, they are trying to communicate something. I used to think they were just being cats doing random useless things like sniffing, pawing or meowing, but nearly every single time there was some scent I needed to deal with, a desire to poop/eat/move or something real that they were trying to communicate. If you consistently ignore their attempts at communication, they will stop trying after a few times (wouldn't you?) unless they're like starving. But if they know you pay attention and respond, they will communicate their wants to you pretty clearly. Nothing they do is random, there is always a reason for it.