Some can, most can't. So the answer is neither Yes or No, but Depends.
As for whether this is a "Sexual Preference", I think for most it is not the case, but it's more like the motivation that propels a Serial Rapist. Part sexual, part Powertrip, or other psychological reason.
Most Pedophiles start at a very young age and if caught and dealt with early on can be rehabilitated with much greater success. If not caught early on, they become too accustomed to it and are extremely difficult to rehabilitate.