You are not sacrificing anything by having a child. You are not fulfilling someone's needs. The child doesn't want to be born, the child does not have any needs or problems to be alleviated. When you make a child, you create needs, and then pretending to be a selfless hero for fulfilling the needs you created is just narcissistic self-aggrandizement.
I did not say everything people do is selfish, just that having children is selfish.
I'll explain to you how it's selfish. There is not a single reason to do it that doesn't involve the fulfillment of your own self-centered desires at the direct expense of the child. Remember, the child does not want to come into this cesspool, they don't want anything. They cannot stand to gain anything by being forced here. So causing a person to suffer, degrade, and die, all because you wanted to fulfill a hormonal desire, or fancy yourself a hero, or have a little slave you can abuse at your own leisure, or as a retirement plan, you are objectively a self-centered, narcissistic, solipsistic, sociopathic nihilist. So take your smug, satisfied sub-gorilla iq nonsense and shove it.