Obviously actual generations live longer than past generations.
This is because we work less hours and the machines help us to realize hard works.
Therefore we can find two points of view, on the one hand the point of view of the government and the other hand the point of view of workers.
If I thought as a politician, I would search the option more economic.
And it would be that workers work as longer than he could because if they retire early the government would pay pension.
In contrast, if I were a worker, I would think that I must retire as soon as were possible.
Because usually workers works harder and a long time.
In my opinion is more important worker’s health than economic things because if workers retire earlier, younger workers could start working and provide new ideas.
This is the reason why I think the best age to retire is 55.
And a good idea could be that since 50 to 55 workers teach to young workers.