I play everyday and do have a wall bracket for one of my guitars, and you do have a point about the dust etc. But not everyone plays everyday, and I like to expect the unexpected as to accidents that can and do happen to guitars on stands, the risk is increased if you have children who may be aware that the guitar is out of bounds but hey, kids are kids, visitors add to the risk, picking up guitars and at times not puting em back with the care or attention we do, the other half weilding a mean and moody hoover.

I'm luck I keep all my guitars in the lounge in cases out of the way and when playing it is no problem leaving the caes in the middle of the floor when that guitar is in use.

With regards to gigs the only thing to use is as you say a stand, unless you have the room to put a case at the side or back, depends on person to person I suppose

Were all different as our opinions will show but thats what makes us what we are in life and in music