My mac won't let me turn off my automatic login
I don't need the security anymore and my account is the only one and the admin account, if that makes sense. I have been trying to remove the login by going to users and groups and clicking login options as well as security and privacy but there is not even an option to turn it off. I am upgraded to the latest OS and I would love it if anyone could help.
MacBook Pro, OS X Mavericks (10.9.4)