I sometimes did a thing like that with Skyrim and Oblivion where I had rules against time-skipping and fast travelling, but I could still use sleep to pass time or hire a wagon to skip a journey.

But with Valheim I don't think I could begin to commit to sleeping every single night; certainly not while out on an expedition. I would need to greatly extend the day-night cycle to find that bearable and stopping to refresh the rested buff is already enough. It's just easier if I go with the belief that the afterlife prevents death by natural causes such as sleep deprivation or starvation.