Retired old people who aren't just ... busy being sick and dying give back to their communities in HUGE ways. We had someone's grandpa come to our robotics competition to cheer the team on. The old people in my building do all the serious political organizing and man the polls. I'm too busy working being in my 40s and all that.
Lowering retirement ages takes away more than just "retirement" ... it makes everything harder.
Far as I'm concerned it should be 59.
@futurebird
In France it went to 60 when the center-left alliance came to power.