Good question and I have given it a lot of thought as I get older. I know my husband, children and grandchildren would miss me very much...we are all very close.
On the issue of more practical matters, I am ashamed to admit it would be very very hard for my husband. He is not at all interested in our finances, nor does he really have a clue about paying the bills. I keep saying I will write things out and then procrastinate. I do know if I died suddenly, my daughters would help their dad sort things out.
We just went thru this with the death of my husband's mother. It was nightmarish for m husband and his brother to try and sort things out.