well done missing the point. the point being that it's a waste to spend 8 years in school + 3 or more years in residency + hundreds of thousands of dollars only to constantly be thinking of when you'll get off work or how you can work less like a lot of people on here and the hospital always seem to be doing. this is after all your career, and it's a shame if you spent all that time, energy and money to enter a career that you're always trying to minimize being at.
i think it's you that's missing the point. young doctors today want balance - there's time for work and then time for one's own life. there's no crime in wanting to actually go to your kid's little league game or enjoy a sunday afternoon football game with your buddies. i also think you overstate the situation - i don't think most doctors "constantly" think about when they're getting off, however i do think doctors today want to have a set schedule of work hours that they're comfortable with (be in 30 hours per week or 60), so they can arrange to do things they enjoy without interfering with their work.
these desires, which are totally reasonable in my opinion, are reflected in recent specialty choices - more people going into EM, derm, radiology, and path, and fewer going into OB/gyn and gen surg. even among internal medicine, we're seeing a trend towards hospitalist (set work hours, pretty good pay) OR outpatient (again, set hours and decent pay). at the end of the day you cannot force people to sacrifice their entire lives to their work, no matter what their work is or how much time, money, and effort has gone into it. people just won't do it and will gladly take less money in exchange for a life they're happy with. the solution will be to train more doctors, such that the total doctor-hours worked remains constant, which is ultimately what matters in terms of providing proper patient care.
you may feel it's noble and magnanimous to work 75 hours per week, but some of us want to be around our families more than the time it takes to impregnate our wives.
balanced lives - it's where medicine is moving, and people like you and the 60 year old white men who used to run medicine can kick and scream and whine all you want, but nobody can force us to work more than we want post-residency, and the longer certain fields fight the wishes of the masses, the more they'll struggle to recruit quality american medical graduates.