There are places and times in quilt making that permanent glues are useful. There is no one-size-fits-all rule. Those that make serger quilts, for instance, frequently use a permanent glue drop to stop the tailings on a seam. Some use an adhesive permanent spray on an applique because the temporary ones do not last as long as they need them to last. Some temps just seem to evaporate away after a couple of days or so. Permanent sprays are not inflexible. Many permanent glues are used in placemats and tablerunners.