The real question is, who is going to decide who you are, and what makes you happy? Some people are content to let others tell them who they are, and live their entire lives so as to please others. If it were not so, then we would not have career soldiers, priests, and monks.
Others among us live lives of misery trying to please others, whether the others in question are parents, friends, or some kind of an audience. Think of Michael Jackson. He spent his entire life trying to please his father and his fans, and he lost himself in the process.
So: Are you happy letting your parents tell you who you are? Is that a comfort zone you can stay in for the rest of your life? Are you going to be happy the rest of your life with the body you have now?
Or: Assume for a second that your parents do not exist. You have total freedom to be whoever and whatever you want to be. Who are you? Who do you want to look like? Do you want to look like Kim Kardashian? Or do you want to look like Vin Diesel?
There is no wrong answer. You have to decide what makes you happy.
But that whole "I may not be cut out to be a woman" thing? Well, there is something. For, that is how I figured out that I was transgender. I figured out, over many years, that I really was not cut out to be a man. Because for me, being a man always felt like doing a job. Every time I did something manly, I told myself, "I am doing what I am supposed to do." The problem was, eventually, being a man gave me stress, and then the stress related illnesses started to slowly kill me.
I never grew up thinking I was a girl, either. I had no frame of reference for gender until I was about five. I did not really know what gender I was, only that I had been given the icons of boyhood and told to act like a boy. But the first time I realized there was a difference, I wanted to be a girl. And ever since then. As a teenager in the 1970's, not knowing that gender transition was a "thing," I read science fiction and fantasy novels where a guy turned into a girl, either through magic or technology, and wished that was me.
So you might want to take a closer look at your background and childhood and see whether you ever had the opportunity to perceive yourself as a girl. Speaking of which, at what age did you first start wanting to be a girl?