> by the time I will go into retirement, the whole system will be unviable financially and I might get nothing.

What do you mean when you say "financially unviable"? There have been similar concerns raised about the US retirement system, but AFAIK that only means less money coming in than promised going out. The income is predicted to stabilize at ~75% of expenses after the "Baby Boom" generation finishes retiring. At the worst, I'd expect a pension cut rather than a complete collapse to 0.