One thing to consider when deleting your FB account is that someone can then create a new profile with your name and pics and start adding your friends etc. Most will believe it's you and accept. It's a goldmine for personal information gathering for social engineering attacks.
Firstly, your friends are more likely to notice it's a scam because they're still connected to your legitimate account. Second, if this does happen to you and you've deleted your account, you can't report it to Facebook. Reporting this issue to Facebook requires either:
1) You (the victim) report the cloned account from the legit account. Or;
2) One of your friends reports it but they must select the victim from their list of friends.
Can't do either if your account is deleted.
That being said, I followed their process for several clients and Facebook refused to do anything about it.
