Great Question!!!!

I think we all would find that working 9-5 would be less hours

But the truth is we could never get all the things done if we limited ourselves to these hours. Still, I will never get used to the feeling of dread, when the phone rings two hours after I went to bed.
I always think it's family or friends in trouble when it's just a client or support issue at 1:30 a.m. (happened last night)