My father was murdered by a drunk driver ten years ago this month, and that's pretty much how i feel. I dont feel anger towards the man, but i definitely feel very bitter.
In dreams i hear his voice, as much as i heard anyone else's. When he first died it gutted me a lot, cause half way through a dream i would remember he was gone - and i would wake up with the worst heavy feeling in my chest.
It slowly goes away, the hard pain. You start to remember all the great memories, and of course miss them - but also want to keep those things in your hear. Like with my grandmother, i want to always remember how she would say my name when i was a shit turd of a kid.
If you love people in your life, rejoice that they are there - as when you get older they suddenly are gone.