I would drive faster, run red lights in the middle of the night and come to a lot of rolling stops. I would quit my day job and just took what I needed to survive. I would squat in mansions while no one was living in them and test drive a different car every week (I would keep them for a week long test drive then give them back.)
That being said if I had to choose a world without laws I would choose the laws every time. We have rules for a reason and I am happy to follow them to live in a civilized society. Still it is nice to fantasize about things.