I know in Sims 2 you can't without corrupting the game save, and in Sims 4 you can delete any sim in the game. But I can't recall if it is safe to delete the premade sims in Sims 3. Is it safe to de...
The problem with deleting a sim using Object Delete is that you get rid of their physical appearance but the sim is still in the game. You just can't do anything with it.