I came in to mention Superman, but on further reflection, even Superman needs to pay his rent. Due to his Midwestern values and the “American way” he so strongly believes in, he’d rather have an honest job instead of selling out and pimping himself out for money (which he could very easily do). There’s no way Superman would be able to exist in any workplace without being constantly pestered, plus he wants to get ahead on his own merits instead of that of being a celebrity.
Edit: Why does Deadpool need a mask? After the massive scarring caused by Project X, no one would have a chance in hell of recognizing him. The only thing I can think of is that he’s vain.