I turned 18 under my parents roof as well. I was also still in high school for three months after my 18th birthday. I still had a curfew, was able to be grounded, told me where I could and could not go and with who. Like #3 said, your parents are looking out for you. Just because you are legally an adult does not mean you have the experiences of one. Trust your mom on this one and you’ll thank her later. Now I am 21, living on my own, and have a better sense of judgement from obeying the rules.