I feel the same, I only have time off if I really need it but one or two of those times was because too tired, I had been working 14 hour shifts and working on my days off and it all took it's toll. We are nurses not martyrs, and nursing should not be the most important thing in your life, (if it is you need to get a life!, sorry) If you're ill, take the time off, we are entitled to some sick leave, and you will only make things worse in the long run. And you shouldn't worry too much about leaving the ward short, isn't that what agency nurses are for?!!:)