I completely understand what you're saying here. When I entered medical school I really saw myself going into a field with a very broad knowledge base like FM/IM/EM. My mom is an FM doc, and growing up I could go to her with any general ailment or question - sore throat, new rash, upset stomach, URI, fatigue, new drug or treatment in the newspaper, or some rumor I heard from elementary school friends - "mom, do you really get hemorrhoids from sitting on cold concrete?" - and she could come up with some DDx and/or solution. I thought it was so cool that she seemed to know so much about so many different things. My dad on the other hand is a general surgeon, and the few times I brought such things up to him, he would just give me a strange look, and say "I think you'll live through the night."

Then again, when sliced my forehead open after falling off my bike at age 10, he was happy to sew me up right on the living room couch, which was cool in its own way, too.
I guess my point is that if what you value most is being the "doctor" to your family & friends, you really have to go into one of those broad fields -