[Tarq0n]

Why does that require growth? If a population is at replacement level and keeps a uniform population pyramid, things are stable as long as the retirement age is set at the last 15% of life-expectancy or so (to account for labor force non-participation).

[lm28469]

Replacement level isn't enough to sustain the lifestyle we had since then end of ww2, that's why the quality of service in most European countries are going down while taxes, retirement age, &c. are going up