Of the many reasons why being President would suck, one of them would have to be the fact that they're always working. It's not like they can "call in sick" and stay home to go skiing or catch up on Lost DVDs or they can't just decide that they're not into it and spend all day playing Tetris. Hell, they can't even really call in sick for real and so have to deal with Congressmen and foreign leaders while dealing with anything from a bad cold to the runs. And even when they do get a break, like on a weekend, they still get briefed every morning and they still probably have to put in at least an hours worth of phone calls and random BS and if anything happens, there goes that 6:00 showing of "Saw VI." Even those times when they actually get a vacation-- usually in August (or in the case of our last President, summer)-- they, again, still get briefed every morning and still have to be President and still respond to floods hitting major cities (or not).
Why I'm wondering this is because you'd think after passing Health Care, Obama would probably want a day off or at least have a mellow day so he can both rest up after all the craziness and so he can have a reflective moments for him to walk around the White House and think "oh yeah, FDR, I'm one bad-ass motherfucker too. " But I don't think he can't.
When I'm working, I usually work at places that have this huge project and or campaign coming up and everybody works their asses off to do it and when it all gets down and everything is perfect, the bosses let everyone take a day or two off or they tell them to come on in but take it easy for awhile and if you want to take that three hour lunch, go for it.
I don't think they can do that in the White House.