If you think about it.. Sasuke was never "bad" until he found out the truth about Itachi.. Before that, he ddnt give two shits about anybody else but Itachi. However, he constantly had to deal with Naruto's annoying ass along with the other leaf vllagers constantly attacking him & trying to force him back..Think about it.. Before Sasuke found out the truth, he never once hunted down anybody in the leaf & attack them.. Think about it lol if you left your city to go shoot someone who killed your parents, would you want your annoying ass old friends to keep following you & attacking you for no reason?..Anyways, i used to fuck with Sasuke, but now he's a ignorant emo.
they were not trying to stop him from killing his
brother, necessarily. they were trying to stop him
from joining forces with the evil orochimaru. they
knew or at least had an idea of what oroc was
doing and knew that he was going to try to use
sasuke. Simply put, he is evil and friends
don't let friends join evil.
Apparently once you defect from the village
you're considered a traitor especially if
you join forces with an S-Ranked wanted missing
nin, he should have done like Jiraia and say he
was gonna do research