Some people would, argue against that. Some dudes are super paranoid, and enjoy growing indoors. Personally I have a secluded backyard, but I enjoy the controlled environment, indoors.
When I have a new mother, I put it outside for the first month or so (assuming its the veg season) to toughen it up! (maybe it doesn't get tough or anything, but I just doing it makes me feel that they'll be even stronger indoors under a hps) its like an annoying luck habit.