I think it's definetly absurd to think that dropping out as a third year is a viable option. At my school you would be $150,000 in debt by that time and who the hell can afford that? Personally, I absolutely loathed first year and basically cried everyday I was there. I just thought it was the biggest bag of crap that I've ever dealt with in my life and by the end of the year I just really couldn't see the point of the whole thing anymore. And yes, I went out and worked in the real world for 5 years before I went to do my post-bacc. Then I worked while I took classes. In my first job, I worked on a film set from 5am to 10pm some nights where my sole responsibility was picking up cigarette butts and water bottles and taking crap from B movie actors like Neil Patrick Harris (alas, Doogie Howser was a total assclown) all the live long day. I stood outside with a walkie talkie when it was 20 F and my instructions were to "lock up the ducks" (meaning: I was supposed to make the ducks not quack while they were shooting inside, where it was warm). So, believe me, I've had my share of bullsh1t. The deal with med school was simply that it forced me to look deep within myself and decide what was really important. Is it worth it to be this unhappy? Is it worth it to have migraines on a daily basis? Muscle spasms? Anxiety attacks? Depression? Is it worth it to forgo all the other myriad things I'm interested in (art, literature, movies, politics, etc) so that I can memorize the innervation of the brachial plexus? Is it worth it to be 40 years old when I'm done and be over $200,000 in debt? When will I find time to have kids (as a woman, you gotta think about that)? Who will take care of them? It sure as hell can't be me, if I'm working 80+ hours a week getting central lines started so that herion addicts can find a good vein to inject into. What motivates one to be a doctor instead of a PA except ego (esp. if you're going into primary care)?
So, I took a leave of absence which is going to turn into a withdrawl. I don't regret it, I don't miss it, and I'm glad I got the experience of attending med school. I wouldn't know for sure that it wasn't for me if I didn't go through the process.
So, if you decide to do it, do it. Don't do it out of frustration or depression. Do it because you really can't imagine spending the rest of your life as a physician.
And, I know that some people get all flustered when someone leaves medical school. But here's the deal: go read the "would you do it again" thread in general residency to get an idea of just how many regret going down this path. There are LOTS.
And I also know that there are some diehards on SDN that preach that you can be a great parent and a medical student and balance your family and all that (though this is probably easier as a guy), but something has to give. It's hard to be on the top of your game and give it your all to your family. Unless you're happy doing FP in Iowa it's going to take more than just getting by to get into something competitive so that you can pay back those loans.
That's the end of my long f-ing rant. PM me if you have any questions.
Good luck.