-You are the Master, from what I've seen here... But isn't "hardening" a common method that gardeners of all things sometimes should do? I guess it depends on where you live. I'm in the Pacific NW and I know beople who have had both tomatoes and cannabis that were "shocked" by just putting them straight out.
-I think the major issue is how much the temperature drops at night where you live... and it may be regional temperature patterns in general that determine wether hardening is neccessary. Also dont forget some varieties are more adaptable to a chilly night than others. a chunky little indica whose genetics hail from high in some remote valley in the Hindu Kush mountain range may not need to be hardened at all, while a willowy, hazy sativa claiming lineage from the Mekong Delta might require a good amount of hardening.
-Also, you seem to have superhuman powers when it comes to marijuana. Maybe your natural aura joins with the plants and uses psychokenetic energies drawn from you, while sleeping, in order to keep the plants warm all night. I swear there's something not right here, you must be the first cannabis/human hybrid: Homo Cannabisapien Sativa