[quote name='dmaul1114']Yep.
I enjoy my work (at least the research part of it) so I don't dread spending time on it. I get bored of things like movies, novels, tv, sports, video games etc. pretty quickly. Which is why I have so many hobbies, there's nothing I like doing enough to devote a majority of my free time too. But mainly I just like my job, think it's interesting and potentially has value for society. So I like spending a lot of time on that and not just rotting my brain with mindless entertainment all the time.
Obviously, it's a very different view of career when you like your work and find meaning in it etc., than the typical job that's just a paycheck. I can certainly understand why people with those kind of careers want shorter work weeks and all that jazz. I would too if I had a job I either disliked or did solely for the money!
Also, related to his other point, I don't have or want kids. So that frees up a lot of time. I probably have more free time for hobbies than he does despite working 50-60 hour weeks on average since I don't have kids to take care of or a wife to keep happy etc. right now.
And yeah, forum posting/net surfing is probably my top hobby since it's something I can do on short work breaks. Like now when I'm slogging through grading 60 exams (after grading 80 from another class on Monday). Nice to take a 5-10 minute "check the forums break" after every 10 or 15 exams to break up the monotony.

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50-60 hours per week is pretty reasonable... that's about the time that I physically spend at work nowadays... of course, I then probably put in another good 10 hours per week keeping up with the literature, preparing talks, and working on paperwork/research. But I enjoy that stuff... if I were simply working for a paycheck, I'd be pretty miserable, as my paycheck is pretty small...
32 hours per week sounds ridiculously light... I'm just happy that I now get most weekends off.