Following along... Just wanted to pop in for a minute to let you know someone is listening...
I used to feel the same about having to run over and pick up my D15 when it seemed like I was just being used. But then I heard a preacher give a message about one of his daughters. He had a large glass bowl in which he filled with marbles - one for every week until his daughter was 18(basically when she could be 'gone' if she wanted to). Every week he took one out. Kind of reminded him of how short the time with her was.
My D is 15 and just got her driver permit. At 16, she's 'gone'. Do you think she's going to call me to take her shopping? To the Movies to meet her friends? I doubt it. She will be driving herself. I will miss those times, and they're escaping quickly. I've realized this so I drop anything not critical in my life to give her a ride. And I'm not being 'used', in fact I am disappointed when I don't get the call. It's all in your perspective. If you are acting true to your family's best interest, then you know you have done the right thing, no matter if it looks like you're being 'used' or not.