three out of four cats will wear a collar, and most cats exceeded their owners estimates when it came to collar acceptance.
Despite my prediction that pet collars may eventually become obsolete with the improvement of microchip technology, they are currently the best method for ensuring that you get your lost pet back. They also signal to anyone who comes across you cats that it is not feral or 'up for grabs' for them to adopt.
Even indoor cats can get out, and may be in more distress when they do. So it might be time to consider a collar and tag to help your cat find his or her way home. Just make sure it fits loosely enough to slide two finger underneath it, and has a break-away feature in case it gets caught on something.
And ignore that initial offended look, most cats will quickly get used to their new fashion accessory....