Do you think it is your responsibility to take care of your parents when they get older? Why?

In a normal circumstances (parents are neither good or bad), do you think it is your obligation as a child to take care of aging parents?

If you think that this IS NOT your obligation: would you be ok with your children not helping you as you get older?

If you think that this IS your obligation: would you expect the your children to help you as you get older?

Would appreciate if you could include your country in the comments.