@eiffel: can you give a usecase for it?

Personally, I rarely turn off my devices AT ALL. They can go on for weeks and months without any reboots, unless I have to do some planned maintenances like:

- firmware upgrade
- sim card swap (bb bold & htc g1)

and usually I have plenty of time and opportunity to prepare before having to do such thing.

ps: Moreover, my iphone doesn't need to be turned off to swap its sim card...