Very unfair anyway that women get to retire earlier
I disagree it's "very unfair", at least in Poland, because:
1. Women in Poland usually have two jobs - one outside of home and another one - at home. Thus they're more exploited than men.
2. It's usually the grandmothers that take care of grandchildren when their parents are at work and it's usually women who take care of elderly parents, so they fulfill an important role in the society (and in order to be able to do that they have to be retired).
So, in order for women and men to have the same retirement age, in my opinion, they would have to have the same share of the burdens that society puts on them (or women should be relieved of their burdens). Maybe that will happen one day, but that's not what I'm usually seeing in Poland. So, for now, not only is women's life harder, but they also have to live longer for less money than men. Nothing to be envied, imho.
yet live longer
And this is one of the reasons why women get lower retirement pay than men in Poland. So, is that "unfair" too?:
biznes.interia.pl/emerytury/news-kobiety-dostaja-nizsze-emerytury-od-mezczyzn-zus-ma-wytlumac,nId,6561114