your doctor is a moron then
finasteride can not grow back hair that is gone
the best case scenario is it can save a hair that was on its way out
You are taking what my doctor jokingly told me way more seriously than I did. Proscar actually did grow some hair on my head....about a dozen hairs altogether.

The quote I inserted is not from my doctor. It is from the web. It too was not meant to be taken seriously. But if you read it you'll see that no claims of actually recovering a full head of hair are made. In fact less then 50% of people taking finasteride actually regrow hair.
I was genetically destined to be bald and I am fine with it. For me to be upset about it would be asinine since nothing can be done about it that is practical or within the scope of things I would ever do. For example, I would never have a transplant or wear a toupee. If I really felt the need to sport hair for a day, I'd buy some crazy wig and wear it like one wears a hat. And I do wear hats when I it is cold out or I don't want too much sun on my head and sometimes when I just feel like a change.