indoors, if properly done, is an environment that has no cloudy days, no chance of frost, no deer eating them, or dogs trampling them ... much less insect infestation (still possible if you dont keep a CLEAN room), etc ... outdoors has the advantage of no electric bill (usually no big deal anyway, - 1000watts, 18 hours a day where I live is about $22/month) ... lots of room for more, taller plants (but, they attract attention) ... personally, if I had secure, remote acreage, I would still grow indoors, I like the quality better ... :smokin: