I think that your most basic limiting belief is that kids fundamentally are a
burden rather than a
worthy sacrifice (and therefore in some sense not a sacrifice at all but part of our collective life-purpose - although perhaps we've got it all wrong about the perpetuation of society as a worthy purpose!). You've of course earned the right to wonder about this, as you do a lot of good in the external world.
The way I look at it, without children any society, no matter how enlightened, soon disappears. This is why the highest degree of self-growth is about learning not to be concerned with the self but to accept your kids as part of you. But this is just what you claim by the Subjective Reality model! Aren't your kids just a reflection of some aspect of you, and therefore by rejecting them as travel companions you are rejecting some part of yourselves...?
