I guess the questions being asked by a thread such as this would not occur if we knew with certainty everything. Who we will marry, what our children will be like, how long we will live, what happens when we 'die'? On the other hand if that were the case what would motivate us? We would already know all that we need to know. My experience of being a parent of a very young child is from a few years ago. However I'm sure it is still the case that kids go through a phase of just asking questions about everything. Their capacity for knowledge appears endless as they are quite literally like an empty vessel. At some point they and we grow up and that thirst for knowledge can disappear as the material world takes hold and dangles all sorts of goodies in front of us. Some of us no longer ask any questions. Some of us just accept someone else's half baked answers to our questions. Yeah, be good and you will meet god when you die. But some continue to question. So in answer to the question, does anything matter, I would say, yes. That does.