The current system requires more workers ( with decent salary) than number of retirers... Given the population if getting older this creates an a very prévisible imbalance...

there are enough. there are using statistical models to predict that we wont have enough in the coming decades.

a biased model that is financed by private pension funds and led by mckinsey… I have a very simple way to make enough funds to maintain current retirement age : increase our salaries. france income per capita is the same for the past 20 years, if you raise salaries it will raise how much money goes to pension funds. problem solved

Same reason as most other countries - reversal or population age pyramid because they’re of baby boomers generation being more populous than younger ones. Soon there will be more retired baby boomers than gen X and millennials working so there will be less money going in to pension funds than going out.