I don't believe in an afterlife. I always wondered if I would change my views when I lost someone close to me, but no. I have had absolutely no indication that my dh is 'still with me', no white feathers, no signs, no special rays of sunlight. I haven't even dreamed of him as far as I know, though my ds says he has.
But is that just because I hate the idea of an afterlife so much? I can't imagine being myself and being in an afterlife. No books, no sex, no food or drink, no hot baths, no movies, no desires for anything? Surely we won't be speaking English, so what will I be speaking - Aramaic, Arabic, Ancient Greek, Sanskrit? A whole eternity devoid of in-jokes, unable to say 'bollocks to that' or 'here's one I made earlier' or 'Razors pain you, nooses give, gas smells awful, you might as well live'? I fear hell as well, after a long childhood reading Victorian children's books and going to church. Hell always described in immense detail, heaven hardly mentioned. It's noticeable how so many films made by atheists focus on hell too - for e.g. Team America: World Police. Satan is real to people in a way that God isn't.
I suppose in heaven my dh might be completely healthy and the man he was always meant to be if he'd never been ill. That's the way CS Lewis put it. But let's be honest, if DH had been healthy all his life, he'd have been an absolute stone cold catch and he wouldn't have been single when he met me, he'd have been long married with at least two children. His illness was actually part of what made him, much though we both hated the idea. The idea of him, being ill, living forever is simply torture, whereas him, not being ill, is not him.