Teen, understand that not every parent is prepared with all the correct ways to deal with Children that dont fit the mold. i dont think they are trying to get you upset on purpose, just not sure the best way to hold your hand, so to speak.
Also, you seem to think of yourself as a healthy person who just is not into the whole religion thing, of course i have alot to say about that but i am not going to judge you here. However its important to know that if you dont have meaning in your life you are in a situation where things could change for the worse very fast because you are not holding yourself to any structure or resposibilities. And it sounds like you are not interesting in going down the drinking etc. path. what i would suggest for you right now without having met you is to make sure that you have more friends that you look up to than the number of friends you see as doing things you wouldn’t do.
Being around good people that accept you is to your benefit even if you are not interested in becoming like them religiously.