Why are 'Grey's' doctors so stupid?
I know it's only a television show. But some of the recurring plot lines on "Grey's Anatomy" bother me, even though it's one of my favorite programs. 
My first problem: It seems to be a regular thing that main characters drink too much then make irresponsible sexual choices before they've sobered up. Granted (SPOILER ALERT), in last night's episode, we didn't actually see anything happen between Izzie and George. But they woke up in bed together naked after polishing off a bottle of whiskey together the night before. And when one of the people is married to someone else, that's never a good scenario.
My second problem: These people are supposedly studying to become doctors, yet birth control seems to be unheard of. We're only two years into this program (season three, but it was a late midseason replacement when it started) and three of the main women characters have had unplanned pregnancies. Izzie gave her child up for adoption, Cristina planned to have an abortion before she miscarried and Addison did have an abortion, in her back story, before her character began appearing on the program. It seems like medical people would be better at taking the necessary precautions than your average Joe -- or JoAnne.