Look, it is not the real question. First you have to decide whether you really want to study physics or not. Then you have to answer why you chose physics, what made you to come here. If you answer these questions to yourself then you will get every questions answer. We are not forcing you to study physics, are we? So, why are you talking like nuts? You are here not to ask some rubbish, be specific and make your self worthy of this community. Sorry to be rude but it is the reality. Hope you will understand my words this time.