Oh please, the 1st person in GTA5 is shit and feels tacked on and unpolished, like 3rd person is in any bethesda game. The game is obviously meant to be played in 3rd person.
And to people saying you can't see your character, this isn't the 90s where you are only a camera, the body is there, if you look down you can see it, you aren't just floating hands. Just like in real life. And you can have peripheral vision, just increase the field of vision.
Edit: I forgot to check who I was replying to, the mmo-c resident contrarian.