Off My Mind: Is A Secret Identity Necessary?

Most people, at some point in their lives, have thought of having superpowers. Who wouldn't want to have the ability to do amazing things? Being able to fly, have super strength or even just x-ray vision would change a person's life. 
 
If you had superpowers, would you ever hold back using them? Lots of heroes have secret identities and try to live a normal life. If you gained superpowers, would you want to go back and pretend you didn't have them? Lex Luthor believed that there was no way Superman could have a secret identity. He couldn't understand why someone with godly powers would want to pose a 'mere mortal.' There are heroes like the Fantastic Four that don't have secret identities. What would you choose to do?