You get to shoot things, and things blow up, and you're jumping off of buildings. It's insane! And hot girls. And you get to dress cool. And you're in a movie with Tom Cruise, come on! So it's a dream come true. Truly.
While some rules are necessary and good for us, living a life based on others' rules, needs, and expectations can stifle your self-expression and creativity, and keep a lid on your potential.