This may not be universal, maybe it's climate related or hydrology. Anyhow, around here, you have to put the casket inside a concrete "vault". The guy that produces and sells septic tanks also produces and sells the vaults, which in and of itself tells you a lot. It's all bad. And you have to have flat grave stones now so Mexicans can drive over your final resting place in lawnmowers without having to weed whack.
.....all the sudden my skull idea doesn't sound so bad, huh?
NOTE: For my information and posterities sake: This is what I do at 4:30 am when I run out of weed - you know, instead of like sleeping.