Your own estate?
Poor planning for life insurance anyway....life insurance would go to a named beenfificary tax free and virtually instantly upon death/certiification..simple, easy, basically unchallenged and protected from others claims.
Once it becomes part of the estate, it just increases the estate..and any inheritance/transfer taxes, administration fees, etc will be charged/increased because of it (like any other asset/cash in the estate)....plus just it becomes an asset that anyone who wants to challenge the other beneficiaries, or feels they were due something for any reason...has to go after.