iwishitweredifferent - I found this thread to be a kind of haven initially for those of us who have HAD to take the horrible, horrible, horrible decision to effectively orphan ourselves, after years and years of being emotional orphans, and who DO NOT take this decision lightly - and there you are, totally siding with the abusive parent (whatever you say, that's what you're doing) and hijacking the whole damn thing. Really pissing me off, and maybe that sounds bitter to you, but you sound like a bleating apologist for gutless parenting to me.
You finally come clean in your last post and say your dh has missed various opportunities to make the first move - and yet he's supposed to be heartbroken? Perhaps his children don't make the first move because he broke THEIR hearts - after all, you've never heard their side of it - and THEY can't risk the pain of further let downs. His fear of being hurt is obviously greater than his love for his children, and perhaps that's the whole root of the problem.
Because you can be sure that this sitation is hurting them too, but if his - the parent's - love just isn't strong enough, then IME there's not much the (adult) child can do. I bent over backwards for most of my adult life to try and work things out with my parents and sibling, but it didn't get me anywhere, and why? Because I really don't matter that much to them - "they're just not that into me". You will never begin to imagine how much that has and does hurt me, but it's the way it is, and I have to accept it, and after years and years of thinking that it was because of me that they were like this, I finally got that it was because of them, and hey presto, I started to have a really lovely life.
I find it really, really insulting that you come on here and try to lecture people who have endured horrendous pain and betrayal at the hands of the people they loved and trusted most in the world, but who have had the courage and vision to try and break free, and suggest that we might not have thought this through very much. Are you kidding? You go and think.
You go and think about why it is your dh, who claims to be so devastated, just lets the chances to reconcile slip by. Why he is prepared to put the dc's you have together in this freaky position of knowing they have another two half siblings who don't see them and don't want to be in daddy's life... for some reason... without doing EVERYTHING possible to change that. You think whether he is really prepared to do whatever it takes to make things right - to listen to whatever they have to say about why they made this break, however unpalatable it may be for him to hear, and take it on board and act on it if necessary rather than justifying/denying/dismissing their views and feelings. Or you could go and think about whether he's actually capable of any of that.
But please stop whingeing about how sad it is that your dh can't be bothered to really make the required effort and somehow offloading that onto those of us who have had to escape really toxic families - for the sake of survival in many cases. It's not his dc's that are perpetuating this sitation; it's him.
There are not many places where those of us who have taken these desperate measures can feel heard and understood by others in the same position because judgement like yours is all too prevalent. Somehow, the poor abandoned parent is never to blame - as others have said, they are soooo good at emotional blackmail and we live in a cloud of denial that parents can ever really be seriously neglectful or abusive, especially when they're cloaked in a veil of apparent respectability and normality. But you know what's really, really, really sad? Some parents are. And THEY are the ones who mess up their links with their grandchildren, THEY are the ones who make the issues of family gatherings really awkward and painful, THEY are the ones you need to be going and lecturing at. Not us. So please can you just leave us alone, unless you're going to start finding some compassion in your heart for the real victims of these situations.
(Hope I'm not presuming too much when I say "us", but a few other people have also expressed relief at finding this thread and feeling less alone with these experiences.)