No they did not. Just as I have not either because I haven’t been sky diving, to the North Pole, created inventions or a million other things. Having kids is however, a life experience that will teach you lessons faster than anything else, in my opinion. I’m not saying I am a superior human because of it, which it sounds like you are assuming. And we would first need to establish parameters on how to measure “changing the world more” before deciding who changes the world more. Sounds like you haven’t reproduced…yet. 🧡