I remember when I first started playing Myst. I liked that it was pretty and its puzzles were based on straightforward logic (as opposed to timing based puzzles). But there was some wrinkle in it, aside from being incomplete, that made me keep going back to another point and click adventure game: King's Quest 6. Some would say because it's a rescue the princess story, or that it had player death (Myst is not violent), or that it had a narrator. Lots of games have those, but I'm not as fond of them. Today, I realize people lived in King's Quest, and that's why it appeals to me more. It was full of people, each with discernible personalities. By comparison, you see 3 people in Myst (not even the player is seen), and a few others are only mentioned.
You can't complain about this anymore. It's perfect!