For better or worse, commerce is an integral part of society, but it also serves as a useful metaphor for life itself; We either pay upfront or we pay later, with interest and often hidden costs. To a parent this hopefully becomes a(p)parent sooner rather than later. We might say that children steal our present freedom through the care and attention that they require for proper development, and there is something to that.
But if we believe that the potential of life is greater than what is currently manifested, than that burden must be carried now. Our own evolution is deeply intertwined with that of the coming generations. Sacrifice is either made when necessitated or manyfold later, and perhaps too late then, by all parts involved.
In summary, the price for a meaningful life is either the responsibility we bear towards the realisation of it or by the torment of it’s absence, which exponentially grows into a black hole of despair and resentment.