Unless it's for a dire anomaly picked up at the 20-week, I'd like to see it reduced. IMO, if you haven't made up your mind that you don't want the baby by 12 weeks, tough. If you decide you don't want the baby after that, there's always adoption. 24 weeks, when the baby is actually a fully-formed human being capable of feeling pain, is just too awful to contemplate.
things can be missed at the 20 week scan, or indications show something is wrong, necesitating more later scans.
what if you are breastfeeding and not having periods and don;t realise you are pregnant until 3 + months? and you hvae PND or other issues? or the baby is a result of rape? is it still 'tough' then?
it is just impossible to apply any sort of blanket statements to this
it should never jsut be 'tough, you aer pregnant and too late to abort,. so have the baby and then give the baby up for adoption'
psychologically, that would be ruinous, imo, far more than a termination that the woman had made a decision to go ahead with