I gather what you mean is that you are surprised film usage is not higher amongst the 50+ segment?
If so I think it is understandable:
1. eyesight deterioration leads to autofocus
2. grandchildren/family are digital and the need to share images quickly is a consideration
3. they've logged a lot of film time and may be tired of it/looking for a different experience at this point
4. May understand that photography is photography and not let the medium get in the way of what matters... photos.