The full gestation period is 40 weeks. Being born even just 2 weeks early is associated with worse health than full-term births. Sadly, many countries ban abortion after 20 weeks (or 22 or 24), when the prospects of survival are dismal. NICU care is very expensive. Instead of spending money on half-grown babies that are likely to die, we should spend it helping people with better odds of living (and fully formed brains capable of self-awareness).