I guess I fall into the camp of believing that running ~60-120min a day isn't really all that much. On the other hand, unless I'm actually running (or watching a race on TV) I don't do a lot of thinking about running.
I wonder if people who play the piano for an hour or so a day, or wake up early to get in 9 holes of golf before work, or avid tennis players worry about their "obsession." Maybe distance runners in the West are just a little defensive, since so many people dislike running, but treat it like medicine they have to take.
I read about ~15 hrs per week (lunch breaks, evenings, Sunday before or after Patriots games), which is ~50% more than I run. I've never worried about being "obsessed" with reading. When I was playing in rec soccer leagues, we practiced twice a week, 2-2:30 at time, plus weekend games. I was doing soccer stuff about 8 hours a week (about the same time commitment as what, 50 miles a week?) and that never seemed obsessive or excessive.
Maybe we runners just need to give ourselves a break. I mean, I race because it's an enjoyable outlet for my competitive drive and I train to race at my best and because I enjoy a nice run after work. Does it need to be any more complicated than that for us non-elites? I guess if I was trying to make a living running races, I might "obsess" more. I don't know, maybe just liking running enough to do it for 90min a day isn't automatically obsessive?