This is topic that says a lot about the modern world.
Here are some suggestions for you.
Due to the enhanced living conditions among the grey population, ageing has become a commonplace in the society.
The improved living standards of the world have increased the aging population in the society.Against this backdrop, some people insist on the beneficial impacts it brings to society, whereas there are other voices against it.
Some people insist that this increasing tendency of the aging population is useful to the society. Others see it as a negative impact on the world.To begin with, the climbing percentage of the ageing population poses a threat to the labor force.
... This is a good point and it has impacted the world already.
Such a trend will lead to a reduction in the number of eligible workers, which impairs the productivity in the workplace and exerts an adverse impact on the overall well-being of society, since growth in GDP is highly correlated with the increase in the number of eligible young employees.
... this sentence is too long. Try to break it down to 2 or 3 sentences.
You have presented good points. I hope my suggestions were helpful. :)