Far too many coffins out there with fingernail scratches under the lid.
In fairness, if people are dropping like flies from a horrific, infectious disease, you probably want to get them underground nice and quick.
I thought that was the reason, but I'll take your word for it.

Here I lie by the vestry door.
Here I lie because I'm poor.
The further in, the more you pay.
So here I lie, as warm as they.