On the flip side of this, however, I do think time off is important. I don't mean time off as in the aforementioned walking the dog and lounging in the garden, though. I mean not working all the hours under the sun, having proper days off. Which is why, although I do work longer hours during the week, especially if my workload is particularly heavy at the time - I take weekends off. Always - with the very occasional exception.
For starters, if I didn't do this, I would literally never see my other half. We don't live near each other, so we can only see each other at weekends. Therefore we make the most of the time we have together, and that absolutely does not include me sitting there tapping away on my laptop! Granted, if something akin to an emergency comes up, I'll do something about it - but generally, there's nothing, no email, that can't wait until Monday.
Other half, important though he is, isn't the only reason I take weekends off. It's because I work to live, not the other way around. I'm very lucky in that I enjoy my job - well, most of it, anyway - but that doesn't mean I want to work every single day. It's bad for your health, and I tend to find if I'm doing too much, pushing too hard, with no time off, then I start to burn out. I slow down, physically and mentally, become much less efficient - and what's the point in that? I'd rather make sure I'm well-rested, having time off and having fun. That way when I come back to work I'm energised and putting work out to the best of my ability. Otherwise, I may as well not bother.