On 11 Jul 2022, at 19:12, Bram Cohen via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:
<snip>
> There's a very well established day/night cycle with fees going to zero overnight and even longer gaps on weekends and holidays. If in the future Bitcoin is entirely dependent on fees for security (scheduled very strongly) and this pattern keeps up (overwhelmingly likely) then this is going to become a serious problem.

This may be true today when adoption is still low but will likely change if/when Bitcoin drives the world economy and is used 24/7 globally. There's a good chance our grandchildren will never see an empty mempool.