Band aids falling off is a good thing; wearing a bandage after it is wet, or soiled, or more than 24 hours old, I would assert, is a bad thing. Bacteria thrive in warm, dark moist environments-it is wise to get the dressing off once or twice each day to allow the wound to dry, check for infection, and change the layer of antibiotic ointment. Bad things happen under dressings: bad things I have found under older dressings include infection, tissue necrosis (destruction of tissue due to excessive tightness/compromised circulation), and maggots...tho the maggots did clean up the dead tissue quite admirably, the patient seemed offended by their presence. Dandy little protein source, too, I am told, tho the efficiencies involved in dining on something that is dining on you is problematical.
I understand that the problems of wound care in primitive circumstances requires compromise, but I'm just sayin'...