I think this thread has brought up some interesting ideas about lifestyle that are worth commenting on.
1) To those 1st, 2nd, and 3rd years out they you ABSOLUTELY should think about lifestyle. I know far too many students who are made to feel the only criteria that they are allowed to consider when choosing a field is do they like the material, and are they helping enough people. LIFESTYLE MATTERS. Ask yourselves how much money you feel you need to make, how often are you ok going back in during the night, what do you want your call schedule to be, etc. These shouldn't be the only things you look at but you know yourselves and you will have to live with your decisions.
What many people on this forum get annoyed about is that most people know not one but several people either in their residency class, their practice or somewhere else who went into Anesthesia simply because of the lifestyle. These people thought that anesthesia is simply punching the clock and all we do is sit on a stool all day. THEY ARE WRONG. Anesthesia requires a HUGE fund of knowledge and significant technical expertise. Unlike almost any other field in medicine we have to decide on things very quickly and there is none other than your colleagues to call to bail you out.
2) That brings me to #2 - do what you enjoy. Lifestyle is important but coming from someone who had a previous career he hated I can assure you that you do not want to do something you hate just because it has a good lifestyle. To make the $$ you need to work hard, that is true in medicine, in law, in business in everything. You will need to put in the extra hours, do the crappy cases (or scut, or bad calls or whatever) and you will miss those ballgames. So make sure you do something that you are willing to make the sacrifice for.
3) So why do people call anesthesia a "lifestyle field"? We do work decent hours, many people take in house call, and everyone starts really early. But what everyone does enjoy is that when you leave the hospital you are done -- no middle of the night calls from the patient in clinic, etc. home is home. Personally I dont mind working hard, but I love that when I get home its just me, my wife and my kid. That works for me. Also, I love being in the OR, and doing the procedures, and the physio, and being that last guy without calling the consults all the time. To me gas is pure medicine and I love it.