i already know to take it out of the cage when feeding. smaler snakes and easier to take care of ones (also a bit cheaper) are ball pythons. only reason to defang a snake would be if it's venomous...
as far as them growing an attachment, i think it differs per animal. i've also had a variety of reptiles that some act just the same to others as they do myself, even after haveing thema few years. where as there's others ive had and seen that will act much more comfortable around its owner/captor then others. from a 4ft corn snake to a 9 ft african rock python (that hisses and is MEAN AS HELL)....only the owner can handle it, they'll strike others who even try. That being said, if they do lighten up to you, it's not as obvious and playfully as a dog or a cat, but sometimes u can notice because they dont get spooked by you nearly as easily as when u first got them. it took a month but my leopard gecko doesnt freak out as much when i got to hold him. he'll still squirm and try and get away but at first he would just spaz out and make a break for it. he's much calmer now when i handle him (its been about a month of having him)