It's also relatively quick. Most graveyards have a hard limit at around 1 year for allowing tombs and mausoleums to be reopened because that's roughly the amount of time for a body to discompose such that it's not a nuisance when it's reopened. Reopening or exhuming a body too soon runs the risk of being a nasty experience for the gravekeepers. But 6 month to a year, you basically have only dirt and bones. Depending on how dry the environment is. Typical western embalming methods, while very efficient on the short term, like preventing decomposition during the next couple of weeks, won't delay natural decomposition after a month or so.
It's also relatively quick. Most graveyards have a hard limit at around 1 year for allowing tombs and mausoleums to be reopened because that's roughly the amount of time for a body to discompose such that it's not a nuisance when it's reopened. Reopening or exhuming a body too soon runs the risk of being a nasty experience for the gravekeepers. But 6 month to a year, you basically have only dirt and bones. Depending on how dry the environment is. Typical western embalming methods, while very efficient on the short term, like preventing decomposition during the next couple of weeks, won't delay natural decomposition after a month or so.