Lawyer?

yes when i grow up i would like to be a lawyer but i still have my doubts because i hear you have no personal life that u will work like 70 hours a week. when i grow up i would like to work in the criminal justice area, and im going to list the skills i have. I love to argue all the time over anything, when i argue i always want to win and in order to win i will find out any thing from what the person said against them, and i dont want to stop arguing till i win. please help.