Sudden or not, it still hurts the same.
My Dad had a massive heart attack and dropped in the garage at 72, in 2012.
Ma battled cancer for 20 years and died peacefully in hospice* at 73, in 2018.
They both hit bad, and there is nothing anyone can really say or do to make it better.
Over time, I've come to grips.
Mostly...
Doesn't mean I don't wish I had them back.
* Hospice. That was the hardest decision I ever made. Felt like I was giving her a death sentence there for a long while. She died the night we put her in. I guess it was time.