Because they are elderly and their minds don't work as well. When we were kids our grandparents were being scammed via letters and phone calls. It has nothing

Because they are elderly and their minds don't work as well. When we were kids our grandparents were being scammed via letters and phone calls. It has nothing to do with wisdom. Combining youthful new ideas tempered by the wisdom of experience is the ideal situation. The young person needs to accept that the older person may have already tried what they are suggesting, and the older person needs to accept that the younger person is capable of coming up with new interesting ideas that may be different than what their experience was.