Oh man. Did my words say the opposite? I was trying to emphasize that it is a choice to take kids or not. I totally side with you. I heavily believe on this, it is 21st century, no one should be pressurized to take kids and let alone for marriage.
It is true that once I am planning to be committed into a relationship, in the name of marriage and plan on still building our world, shaping our career, it is not selfish to take that decision. It is not selfish to take the decision of not upbringing another generation. It is not selfish at all.