Most of the time players gloss over their character bios. They usually jot down one or two lines of generic backstory and focus more on the here-and-now, then fill in their history as it’s convenient. What’s fun is when a player totally blows off the bio and makes up some ridiculous back story. Wedging it into the game repeatedly makes the game even more fun for both the GM and players. Except for the player with the bad back story, that is.