The idea of "good" or "bad" seems to me to refer to behavior or actions. Modern witches (some refer to themselves as neo-pagans or Wiccans) generally speaking   are as morally upright as anyone else. Codes of conduct regarding magical use are usually more strict   and proscribed than, say, those of Christians who liberally "pray" for others (which is what magic amounts to in many instances.

There is some knee-jerk adherence to "the Wiccan Rede" (An it harm   none, do what ye will; Do what thou wilt shall be the whole of the law; love is the law, love under will--all this is paraphrased from Crowley) but if one were to ask a modern satanist about their moral code it would sound remarkably similar. But then, what actual satanists do, as opposed to what the Hollywood or media version suggests, is not familiar to the average layperson (who also might think anyone referring to themselves as a Witch in this day and age might as well be playing Dungeons and Dragons or other fantasy games 24-7).

Witchcraft and paganism, in the contemporary sense, are ways of describing a belief system and lifestyle. Some call it religion. It is diverse and often eclectic. Some practice alone, some in groups. Some worship gods and goddesses, others don't. Some revere nature as sacred; some are just as happy never to be outdoors among dirt and yucky bugs. Some do spells and magic and ritual; others don't. What seems important to remember is that it is a fast-growing movement; that few people who become witches or pagans move on to other spiritual paths; that interest in paganisms and earth-based spirituality are the result of a shift in paradigm (male to female, some say) that honors nature and cooperation and peace over industry and plunder and annihilation. Contemporary paganism has gone from being a fringe diversion to a legally-recognized religion that is increasingly studied in academic contexts for its   sociological, spiritual and other implications.

Blessed be.