Even if a parent is diligent about inspecting the candy, there could still be something harmful to them in it.
My comment is hardly personal. I know absolutely nothing about you so you're incorrect that I don't like you. I neither like you nor dislike you and when I'm done making my comment or comments, you won't even enter into my thoughts, because I will move on to something else. I respond to words on a page, not people. You are correct about one thing though, you SHOULDN'T "care" if someone likes you or dislikes you. This is the internet. You should reserve your caring for the people in your "real life". I ask questions and I answer questions. I'm not responsible for how others "feel" about what I say, THEY ARE. I am no more responsible for how they react than they are responsible for how I react.
I hope the next time a stranger walks up to your child and says "Hey pretty little girl, you want some candy?", I sure hope you raised her to speak to strangers and she thanks the nice man.