Any SaHDs with aging parents who need care?

I'm the wife, but I'm also the one who looks ahead to solve future problems (my husband gets overwhelmed by anxiety when planning for the future).

My husband has mentioned recently that he's worried about his role in supporting his parents and step-parents as they age. This was after his stepfather spent a month in and out of hospitals. My husband is an only child, and has good relationships with both of his parents and their spouses. Our own children are ages 13 to 19, so at least the busiest years of parenting are done. However, I have chronic illness and am essentially no help with physical work at home.

I would love to hear from any SaHDs who have aging parents who need additional care. What kinds of care have they needed? Have you needed to care for them in your own home? Did your solutions work well? Would you do the same thing if you found yourself in that position again?

I know these situations can be very difficult, and every situation is different. I'm hoping to get a deeper understanding of how we can plan for and communicate about these issues. I know I could ask other moms, but I suspect men's perspectives will be more meaningful to my husband.