ChippingIn and giveitago, thanks so much for your lovely supportive posts. We shall keep trying, and have both now kicked the smoking habit (hopefully for good!). I absolutely should stay away from threads like this - am completely my own worst enemy at times. I beat myself up enough over what has happened, without needing people like Leonie to do it for me.
My miscarriages were undoubtedly the most difficult, painful experiences I have ever endured, but I take solace in the fact that I have lots of amazing nieces and nephews (well, DP's nieces and nephews, but I consider them to be mine also, and they all call me 'Auntie Untitled'). They brighten up my life every day 
MsKlo - thank you for acknowledging my post, and your kind words. FWIW, I do in theory agree with your sentiment, but perhaps you can now see that you worded your post in a rather inflammatory way. And that whilst there is no-one here at all who would condone smoking during pregnancy, it is more difficult for some to quit than others. Do you perhaps now agree that support is the way to deal with the issue, as this is much more likely to help expectant mothers quit smoking than simply telling them that they are wrong and selfish? Surely if you feel so strongly about the issue, you will be willing to provide/condone this support (even if it goes against your innate feelings on the matter), as the most important thing is to help pregnant women kick the habit, thus benefiting their children.
NestaFiesta,
'The Visitor- you can't say you're more addicted than the next person and that's why you found it harder. '
Well sorry, but that is just not true. I have actually always found it pretty easy to quit - before my first pregnancy, I was easily able to reduce my smoking to only when I was having a drink (once or twice a week tops) and had no problem quitting the second I found out I was pregnant (although the stress of miscarrying had me straight back on them, I coped the only way I knew how). However, that was my experience, not everyone has the same experience. My Mum, for example, finds quitting incredibly hard - she tries, every week, really wants to, but it literally makes her almost psychotic. She can't eat, sleep, and alternates between sobbing and blind rage. It's very easy for some people to give up, and extremely difficult for others - but the one thing that doesn't help is judgement and condemnation.