Setup code for a 2d game on main camera or gameobject?

I can't seem to find any guidance one way or the other on this, but is it better to set up your setup code for your 2d game on the main camera or a separate game object? Are there reasons to one over the other?

 

What do you mean by set up code? There is no difference in using the main camera or an empty gameObject.

 

If you're using a singleton approach I guess, and you put your main game start code on one object, would that be better to be the main camera or a seperate gameObject. I've seen examples of both and I wondered why use one over the other.

 

When setting up a game manager, I'll typically use an empty Object. In the old Unity, before 4.6, I would use the main camera strictly for my GUI Manager. It's really a personal preference. Now the only thing that ever goes on the main camera are scripts to manipulate it.

 

I usually put my game controller on the camera, but for the game controller you want to put it on something that doesn't EVER get destroyed during the scene.

For everything else, you place it on the object that you want it it relate to.