I have thought about this, I'm only 42, but you never know.
My DD does not quilt, but she understands my love for it, as does my DS, so they can have whetever they want and sell the rest or give to someone who does quilt. I would hope that when the time comes they will think about the grandkids(ages 7 & 15months) even if they don't quilt now they may have an intrest in it someday.
My DMIL is now getting Hospice care and recently had her daughter and I go through some of her fabric and take what we wanted, the rest she wants donanted to a Sr. Center Store in town, so I will be taking some there soon.