For starters:
Children are a drain on one's time and financial resources.
Society allows degenerates to produce offspring, who often wind up being degenerates.
Many children are born simply because people are acting on the biological imperative to produce offspring, even though it's often an outdated drive from our evolutionary past that doesn't serve our more rational interests. This results in children being born into poverty and undesirable circumstances.
Based on the factors above, I'm curious why anyone would want to have kids, when the reality is that many people may be better off not.
Time and financial resources? You got to be kidding me.
As arrows are in the hand of a mighty man; so are children of the youth. Psalms 127:4
My quiver is full, I am one of the wealthiest people on the planet. Not financially, far from it. But when you die what you own means absolutely nothing, what you leave behind is all that matters.
My oldest daughter comes to visit me at work. Carrying her one year old, her other three behind, the oldest just graduated from high school. A coworker comes up to me, "You have a beautiful family", I can't help it, I fall out laughing and she looks at me puzzled. I tell her that what she saw was the tip of the iceberg. That was one child, I have six.
Dad called them my army, and that they are. They are thick as thieves, all in constant contact with one another. And every once in a while Dad would call me, "I need your army". Where and when was all I asked, then one phone call, to that oldest daughter, and BOOM, the army shows up and gets the job done.
And that oldest daughter puts it best. When people find out she has five siblings they kind of freak out. She tells them, Dad said we were put on this Earth to make it a better place. He figured he needed all the help he could get. And each and every one of them is doing just that. I can promise you, right now, at least one of my six children has impacted your life, they have made it better, safer.
I can die tomorrow, happy and content, because of what I leave behind. In reality, I have achieved immortality. Six kids, ten grandchildren and in that area, well things are just getting started. Another on the way, and certainly, many more to follow. That ten comes from the oldest four, maybe it is in the blood, Grandpaw had 16 brothers and sisters. That stent in your heart, patented by one of his siblings. The nuclear propulsion unit on US submarines, that is one of his sons. The next sixth generation fighter, the engine will be the design of one of my sons. He is the team leader working out of MIT.
No, you were put on this Earth for one damn reason, to perpetuate the species. If you are so self-absorbed that you refuse to fulfill your duty, no worries. Like I told my sister, I got your slack. In all reality, it is evolution in action and you can honestly see it in each new generation.