Spoilers for seasons 1-3! (and no im not really serious...its just something I noticed.)
So at the end of season 2 Jack, Sawyer and Kate are kidnapped by the "others" who methodically chose those 3 out of the survivors. What do these 3 have that the others do not? I'll tell you what they have in common. They are all white, healthy and attractive! Yes, I believe the "Others" are really a white eugenics program! Note that all of them are white as well.They didn't pick Charlie because he is a drug addict and Locke because in the real world he is handicapped (and he is too old) and remember they kidnapped Claire and her baby. Also note that the "others" put Kate and Sawyer to work (maybe to keep in shape?) while Doctor Jack is resting the whole time and receiving far better treatment and food.