So you put all the needle junkies in one pen and watch them rape, rob and kill each other? Is that really your solution ? You do realize that when ever there is a large group of humans in one place, SOMEBODY will step up and start organizing things, right ? So the first thing that will happen is that the biggest, baddest needle junkie on the island will gather up all the drugs and start forcing others to provide HIM with sex, food, clothing etc. in return for drugs. When the drugs run out, he will have a stockpile of food, blankets, clothing etc. that he acquired in return for drugs which he will trade for whatever else he needs, (attractive young women or boys will have first choice). Then when everything else has been used up, he will have developed a cadre of "security staff" to protect him and anyone he chooses to protect and he will simply strong-arm everyone else into doing his bidding. That will continue until somebody kills him and takes his place. Survival of the meanest.