There's a surprising amount of dust and what look to be "moth bits" flying around during take off. Between that, and the old admonishment from parents not to touch the wings or it'll knock off the dust they need to fly, I'm left wondering if moths only have a certain number of flaps in them before they can no longer fly. Since it's their last stage before death, I could see the evolutionary advantage to not wasting resources healing / replenishing your wings. Something to read about later.