I see that other factors have been totally overlooked, if you worked normal working hours which is ideal scenarios 8hrs, typically a consultant would do alot traveling, which is not does not count as working hours but is still not leisure time. I usually have hit the street by 6.30am to catch a train to drive down to wherever my client is, how much you are out billing clients is one of the key performance indicators for a consultant, even on partner level you have to be on the move. If I'm in the office most the time then that's not a very good sign, either your skills are not matching any of the projects or there are no projects, which means that sometime soon you will be chasing recruiters.