I'm sure everyone's experience is different, but at my (university) program we'll end up working 60-90 hours per week, with a realistic 70 or so hour average. Of course, it depends on your rotation and year-level.
Also, we take home call which sort of varies, depending on the season. In the wintertime, it's pretty light and you can do some sleeping at home. In the summertime (especially when on call at our local children's hospital), it usually consumes most of your night.
The point is that being a physician/surgeon IS YOUR NEW LIFE. And when you're not working, you're going to be worrying about work/xrays/patients/surgeries, but while that doesn't really ever go away, you do seem to get back to be able to enjoy the "other stuff" in your life like family, hobbies, etc.. Fortunately, my wife is very understanding and she makes it work well, but if your spouse doesn't "get it" that you're a surgeon first (not in a bad way) and THAT is your priority (whether desired or forced (damn pager)), you're going to be absolutely miserable and almost certainly divorced.
The good news is that, hopefully, you'll enjoy your work, and while much of residency sucks, the next 30 years of your life will be rewarding... especially when you see some little kid in the grocery story with a healed arm whose BBFF you reduced and casted 2 months before.
