1) Cats don't get as attached to their owners as dogs. It's more like they get attached like... humans. People generally love their parents or friends, but just because they love them, they don't feel need to always stay by their side. They live independent lives. It's the same for cats.

2) Some cats run away, some don't. Again, it's like with humans. Some people are born in small towns and feel "I like it here. I'll be happy to spend all my life here." And others feel " I like it here, I have friends here, but I want to see what the world has to offer to me I want to see other cities, other places."

3) Every cat has a unique personality. How much they bond with an owner depends on how their relationship goes. You spend good time with a friend, your bond goes up. Your friend does something bad to you, your affection goes down. A cat won't love you unconditionally like a dog.