This sounds like a person arguing on behalf a cast system. Without the right family culture and DNA you can't possible be successful/worthwhile, lets just put those people in a cast to save time, easy labeling for all! Maybe if you breed with a better cast and become part of their family your future would be brighter, so we will arrange a marriage to make this so. This isn't some far off idea - this is the norm in some places, and it is disgusting.
Do you support eugenics? Do you think less of intelligent people who choose to adopt rather than breed? Do you think overpopulation is a non-issue? Do you believe cast systems are useful?
Human knowledge and functional advancement is vastly more important than genetics or children. Jonas Salk had three children, but anyone who claimed "his children are his greatest accomplishment" would be laughed at. His impact on mankind was direct. Direct impact is always better, because no matter how many generations your DNA is passed on, it is all meaningless until they at some point take action and do something. Mindless breeding is something rabbits can do.
There is this desperately sad tendency to want to "pass the buck" to children... sure, MY life was a huge waste, but maybe my children will be something special, maybe it was all worth it because of them.... or my grandchildren. People who do something in the here and now are to be admired because they are a rarity.