Well, here's my guess, and that is all that it is, as to why an attorney would not want to represent Joran:
1. He lies.
2. He's already confessed to killing Stephany, who was killed in his hotel room.
3. There is, from what LE has stated, a mountain of forensic evidence pointing to his guilt, including evidence collected from his shoes and clothes.
4. He fled the scene, a demonstration of guilt.
5. He stole Stephany's car, money, etc.
6. He is wanted for extortion of the family of another victim, Natalee Holloway.
7. In the extortion case, there is FBI footage of Joran negotiating for money in exchange for telling where a missing person's body is located.
8. He has on several occasions on tape admitted to being present when Natalee died and either disposing of her body or knowing where his father disposed of it.
9. There is videotape of the entrance and exit to Joran's hotel room, which (we are led to believe) shows no one else going in or out during the time Stephany was missing.
10. He has given contradictory accounts to the officials in Chile and Peru about Stephany's murder.
11. With his father dead, the family may not have sufficient assets to mount legal defenses in one country, let alone three, assuming Aruba ever indicts him in Natalee's case.
12. He is a foreigner charged with murdering a Peruvian national, and one from a prominent family. This will not be the kind of "defense" that got Joran off the hook in Aruba. The prosecution will go after him with everything they have--which is apparently a lot.
13. The client is spoiled, immature and narcissistic and quite possibly has killed two young women by age 22. Even to most defense attorneys it would be evident that Joran probably belongs in jail as a matter of public safety.
I hope Joran gets a very good attorney, who knows the law and works very hard to demonstrate that he is innocent and/or that the evidence isn't sufficient to prove guilt--because then, once he is convicted, there will be no grounds for appeal. As an American, I believe everyone deserves a fair trial with quality representation. But I also hope that the guilty, especially vicious predators, are convicted, sent to prison, and stay there until they are too old to re-offend. Based on what I know about the Holloway case, I believe Joran murdered Natalee. Based on what I know about Stephany's case, I believe Joran murdered her. If the evidence shows that Joran killed Stephany, he needs to be taken off the street to he can't kill again. The best route to that is a fair trial.