It is not just welfare, but also the healthcare systems. Older people are, on average, much less healthy and need more medical attention. IDK if this can be so

It is not just welfare, but also the healthcare systems. Older people are, on average, much less healthy and need more medical attention. IDK if this can be solved by medical/nursing robots, but we almost certainly do not have enough living medical professionals to care for countries whose average age climbs over 50.