Wooden Coffins are sustainable too - as long as you go for plywood with rope handles whats wrong with that - they will take the weight of any sizxe of a person, you may struggle with other solutions, don't want them falling out halfway down the church service now, through the bottom

The reason wood is used is because it rots well over a long period.
It is a renewable source. People as always took it to extreme with the posh brass handles
and silk linings and polishing rarer wood -
Now I think people are looking for an alternative for unreal reasons
If it aint broke - don't fix it - theres plenty of other things to fix out there

Julie