Today the limit of viability is 24 weeks and has not changed 12 years.
Experts say no fetus under 21 week gestation will ever survive. Their lumgs are just too undelveloped even if more advanced neo natal units were availible.
http://en.wikipedia.org/wiki/Fetal_viabiliThe limit of viability is the gestational age at which a prematurely born fetus/infant has a 50% chance of long-term survival outside its mother's womb.
With the support of neonatal intensive care units, the limit of viability in the developed world has declined since 50 years ago, [B]but has remained unchanged in the last 12 years.[/8]
Currently the limit of viability is considered to be around 24 weeks although the incidence of major disabilities remains high at this point.
 Neonatologists generally would not provide intensive care at 23 weeks, but would from 26 weeks.
During the past several decades, neonatal care has improved with advances in medical science, and therefore the limit of viability has moved earlier. As of 2006, the two youngest children to survive premature birth are thought to be James Elgin Gill (born on 20 May 1987 in Ottawa, Canada, at 21 weeks and 5 days gestational age), and Amillia Taylor (born on 24 October 2006 in Miami, Florida, at 21 weeks and 6 days gestational age). Both children were born just under 22 weeks from fertilization, or a few days past the midpoint of an average full-term pregnancy.
Amillia Taylor is also often cited as the most-premature baby. She was born on 24 October 2006 in Miami, Florida, at 21 weeks and 6 days gestation. At birth, she was 9 inches (22.86 cm) long and weighed 10 ounces (283 grams). She suffered digestive and respiratory problems, together with a brain hemorrhage. She was discharged from the Baptist Children's Hospital on 20 February 2007.
Imagine walking into work with "your" coffee cake and it's YOURS you have no obligation to share and you can eat as much of it as you want but you can share if you want to. Now imagine walking into work with a coffee cake and all of a sudden via de facto it's "OUR" coffee cake. Now you don't have a choice and you have to ration that cake out - guess what??? the fat guy in the corner who YOU believe is too fat to eat coffee cake won't get any cake because there is only enough cake for those who don't look fat.
Once the government gets control over your body and its maintenance the Bloombergs of the nation will have all the power they need to determine what happens to your own individual body, and its life. How can it be otherwise when we give strangers that much power over our lives?
We know when people have the opportunity for power they will take it. I would never trust strong and distant centralized government benevolence over the long term no matter the feel good promises they make now.
Who pays for it tho? oh yeah those evil people who are constantly degraded because they have "too much" wealth and are too successful.
Of course the rich politicians will sit there with their wealth and that's fine because they're the ones throwing crumbs to the people and they're grateful for every free crumb they get that they didn't have to work for that government redistributed.
You're not God, hence you or any individual should not attempt to play God by defining what life is valid or not.
Slaughtering kids just because you feel they're not valid is criminal in my opinion. It is certainly misguided and illogical IMO.
Once a third party comes between you and your doctor, or you and your health, they get all the control and you and your doctor have little or nothing in terms of decision making.. Can you really have that much faith in a huge faceless bureaucracy to look after your own personal interests? I don't think so. Eventually it will come to ruin.