I do not expect my teenage sons to behave like adults. I do, however, have certain expectations that I believe they need to meet that inevitably instill responsibility, accountability, as well as deem possible consequences if they are not done. (straightening up rooms, laundry, mowing, etc.)
As far as making their own decisions on things, I don't expect my boys to always make the smartest and best decisions. Have I given them the tools to guide them in that direction? Yes. Do my boys know the difference between right and wrong? Yes. I can lecture and try to hand-hold my way through parenting, but what does that really do, but give them more reason to never want to open up to me about anything. I have an open door policy with my kids. Anything goes. If they are in a situation where they feel trapped or scared, they are to call me and I'm there, no questions asked. I now have an 18 year old son who, I'm proud to say, survived his teen years with little to no battle scars.
They are kids. I expect they'll make mistakes. But no matter what, I will love and support them. I may not always agree with their decisions, but I will continue to guide them and give them the foundation they need to be successful in life. And one day, hopefully, they'll be amazing men and I can say, "Not only did they survive... but SO DID I!"