If you have kids, and meet a partner who has never had kids, and due to your ages will never have more kids - beware. He will likely not know what it feels like to know you'd lay down your life for another. That's not a bad thing at all. But it also means he might question the level of care and support you may provide for your young adult child, despite possibly having received the same from his own parents.
He will never understand what you feel for your kid. No point to this post other than catharsis x