What a completely unhelpful comment: for all you know they are infertile. Having children shouldn't be done for such selfish reasons as mere personal fulfillment. I care about the kind of life a hypothetical human offspring would have (which is why I choose not to have any currently). Creating a family is a really weird solution to bring up.

But your rage is valid, I think it is just misplaced. The above commenter to you could perhaps be more effective in their decision making regarding filling their existential void. But family planning is a rash and presumptuous 'solution' to filling that need.