Corn snakes have tons of personality. It all depends on how you interact with them. A lot of people own corn snakes as a business, breeding and selling them and they may have dozens or even hundreds at any given moment. For the most part these snakes are just a commodity and the owners simply don't have the time to treat them as a pet. The Pet owner on the other hand may just have 1 snake, and may treat it as a member of the family, spending lots of time with it, and interacting with it just as they would a cat or dog.
It's no different than the "Dog Owner" that chains his dog up in the back yard, and the only time he sees the dog is in the morning feeding, versus the family dog that is played with and loved by the entire family all throughout the day.
My corn snake will actually crawl out of the cage into my hands when I open the doors. I took him with me to work this morning, and he spent the whole day at work. He got to meet a lot of new people, pose for pictures, got a lot of rubs on the head. He goes shopping with me, the people at the Wine Store down the street know him by name and they love him too.
So really it depends on how "You" treat him and how much time you spend with him.
