I think the problem in general, is it's a "taboo" subject and the government doesn't want to touch on it, incase it offends religious groups A, B, C or D, or incase there's to much backlash from pro life groups
It's the same "taboo" subjects like gay marriage or women working in the armed forces etc, over time (I hope), it'll be accepted and made legal. (with proper procedures/checks in place, of course).
Reminds me of this Australian story -
http://www.dailymail.co.uk/news/arti...-die-laws.html