According to a December 2015 report from the World Health Organization, the global population of people aged 60 years and older will more than double, from 900 million in 2015 to about 2 billion in 2050. "In most parts of the world, the 80-and-over age group is growing faster than any other, and is expected to continue as the fastest growing segment of the population for at least the next 50 years (UN World Population Ageing report for 1950-2050).
Though there is much need for elder care in the world, there is also a lot of elder care occurring. Many households are providing informal care to one or more elderly persons.
The need for eldercare is universal. If a family has not yet had to deal with providing elder care, it is likely that they know another family who has, and also likely that they will have occasion to provide elder care in the future.