At the speed at which government push back the retirement age, I expect something like 70 with 47 worked years by the time I’ll be old enough.

I don't know which government you mean. Here in the UK it's gone from 65 to 67 for men and 60 to 67 for women (Sliding scale - currently 66, but 67 when I get there, and further still for younger people), so I guess it's happening for everyone. I started work at 16, so if I retired at the legal age I'll have worked for 51 years.

But - that's just the state pension which is subsistence only. If you're smart you have a private or work pension alongside it, and you can take that whenever you can afford to, then collect state pension as well when you're old enough.

We've also lost the mandatory retirement age - you can keep working until you drop, if you want to.