Does the ram/CPU in the server that hosts this forum need a little break ever now and then? Maybe we should shut it off for an hour every night.
Not trying to be too flippant, but your whole world is fuelled by electronic devices that never shut off. Some parts like certain types of screens have have burn-in issues if left on thousands of hours, and some of the components might use a useful lifetime, but most components and chips have no trouble running constantly. If anything, the heat/cool cycle when powering off and on is potentially causing more wear and tear. But not to a degree where any of us need to be worrying about it.