I don't know cicatrice - i have been through exactly the same. My dad had alzheimers and it was just awful, horrid - no words to describe it There were times when the phone would ring and i would secretly hope it was his care home telling me he had a heart attack and died. He deteriorated quickly and died from lung cancer - i remember when he died feeling nothing. I was called on the monday and he didn't die until the following Sunday, but he wasn't concious really. For a while he wouldnt even register i was standing in front of him, he would register my mum though. I had to switch off, i had to otherwise i would not have coped. I just used to tell myself i was a bitch and that i should be prepared to live with it afterwards iyswim. When he died everyone must have thought i was as hard as nails, but how could i explain to them that the person lying there wasn't my dad and that i knew that my dad would not have wanted me to see him like that. I was like "can we go home now then?" I remember asking the doctor if he was "going to take much longer" My lovely dad had been gone from me for almost a year by then.
Its so very cruel - because although you have lost them already, you don't really get the chance to grieve properly while they are still alive, but when they go you are so fucking thankfull that they have been delivered from a living hell. I can honestly say, hand on heart that i was glad when my dad finally passed away.
He never got to meet DD2 and this breaks my heart, she was 8 weeks old when he died. Now she is 4 and i do very much miss the fact that he isn't there for the milestones, i imagine he is there, i can see him getting choked up at school events, sometimes i imagine bumping into him as we walk up the alley, all things like that - it took time for that to come.
I do totally understand where you are coming from Cicatrice, however, there is a caveat - i would urge you to talk to someone about your feelings. I have had a breakdown since my father died and whilst there are other factors, mostly PND, im sure my sticking my head in the sand about losing my dad was the major factor.
I am very sorry for your loss, i hate to read of other people having to go through this, its truly awful - its not called the long goodbye for nothing