I'm 29 and honestly skeptical that life expectancy will keep on rising as it's assumed. With all the toxins, stress, rising heat deaths and crap in our environment, will most of us even be healthy enough to work till 70? Could it be 75 when I approach retirement? I think it's important to keep up some positive prospects for our generation - otherwise I can think e.g. of a higher suicide rate which then also shrinks the workforce