I have lost quite a few customers in the past few years. Mainly because the average age of my customers is so high, I know.
Its sad when it happens but what is worse to see sometimes is the after effects of people dying. I had one customer called Jackie, not old, I'd say late 50s, but she was a drinker and a bit erratic. She died suddenly from a heart attack.
A few weeks later a skip appeared and all her stuff, pot plants, pictures, towels, clothes and everything went into the skip. Everything that couldn't be sold quickly.
Turns out a neighbour told me later that although she had a daughter and a grandson she had left everything to her waste of space scrounger boyfriend and he just sold the house and set about drinking himself to death on the proceeds.