You are making statements and declaring them logical without backing them up.
"If all is meaningless matter in motion in a godless universe, LOGIC DEMANDS that love and people are no more meaningful than a rock"
Care to delve deeper into that statement? How does logic demand this? I think therefore I am... I don't need a supernatural being to know that my family has importance, it is self evident with or without your God.
"your thoughts are no more meaningful than the impersonal random stimuli that created them."
Because you say so? Regardless of the processes which generate thought, they are my own thoughts. You are again delving into areas that we don't quite understand completely yet (human thought) and because of our lack of knowledge you assume a God. Our ignorance does not necessitate a supreme intelligence.
But that is not the point. The point is - why does your family have importance? Why is it a big part of your life? Love, affection, caring, and the other emotions you may have for them are not part of the material realm.