Speaking as an Asian, I grew up in a culture where parents, and elders in general, are super-important. Things are changing now, but many of us are still very close to our parents.
In old-school thought, taking care of one's parents is seen not as an obligation, but as an opportunity to serve them, and to repay them (in some small measure) for the love and care we have received from them in our childhood.
When my grandfather passed away suddenly and unexpectedly in his 60s, my father was distraught that he did not get an opportunity to serve him.
My point is, many of us view the situation differently - not as a burden, but as an opportunity.
However, it is undeniable that sometimes it can be a burden, and for those situations, it would have been excellent to have the government take care of the elderly, as it is done in your country.
Edit: A typo.